1
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Kirschner H, Heister N, Zouatom M, Zhou T, Hofmann E, Scherkenbeck J, Stoll R. Toward More Selective Antibiotic Inhibitors: A Structural View of the Complexed Binding Pocket of E. coli Peptide Deformylase. J Med Chem 2024; 67:6384-6396. [PMID: 38574272 DOI: 10.1021/acs.jmedchem.3c02382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Peptide deformylase (PDF) is involved in bacterial protein maturation processes. Originating from the interest in a new antibiotic, tremendous effort was put into the refinement of PDF inhibitors (PDFIs) and their selectivity. We obtained a full NMR backbone assignment the emergent additional protein backbone resonances of ecPDF 1-147 in complex with 2-(5-bromo-1H-indol-3-yl)-N-hydroxyacetamide (2), a potential new structural scaffold for more selective PDFIs. We also determined the complex crystal structures of E. coli PDF (ecPDF fl) and 2. Our structure suggests an alternative ligand conformation within the protein, a possible starting point for further selectivity optimization. The orientation of the second ligand conformation in the crystal structure points toward a small region of the S1' pocket, which differs between bacterial PDFs and human PDF. Moreover, we analyzed the binding mode of 2 via NMR TITAN line shape analysis, revealing an induced fit mechanism.
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Affiliation(s)
- Hendrik Kirschner
- Biochemistry II, Biomolecular NMR Spectroscopy, RUBiospec|NMR, and PhenomeCentre@RUBUAR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, Bochum 44801, Germany
| | - Nicole Heister
- Biochemistry II, Biomolecular NMR Spectroscopy, RUBiospec|NMR, and PhenomeCentre@RUBUAR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, Bochum 44801, Germany
| | - Manuela Zouatom
- Faculty of Mathematics and Natural Sciences, Bioorganic Chemistry, University of Wuppertal, Gaußstraße 20, Wuppertal 42119, Germany
| | - Tianyi Zhou
- Faculty of Mathematics and Natural Sciences, Bioorganic Chemistry, University of Wuppertal, Gaußstraße 20, Wuppertal 42119, Germany
| | - Eckhard Hofmann
- Protein Crystallography, Faculty of Biology and Biotechnology, Ruhr University Bochum, Universitätsstraße 150, Bochum 44801, Germany
| | - Jürgen Scherkenbeck
- Faculty of Mathematics and Natural Sciences, Bioorganic Chemistry, University of Wuppertal, Gaußstraße 20, Wuppertal 42119, Germany
| | - Raphael Stoll
- Biochemistry II, Biomolecular NMR Spectroscopy, RUBiospec|NMR, and PhenomeCentre@RUBUAR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, Bochum 44801, Germany
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2
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Kirschner H, John M, Zhou T, Bachmann N, Schultz A, Hofmann E, Bandow JE, Scherkenbeck J, Metzler-Nolte N, Stoll R. Structural Insights into Antibacterial Payload Release from Gold Nanoparticles Bound to E. coli Peptide Deformylase. ChemMedChem 2024; 19:e202300538. [PMID: 38057137 DOI: 10.1002/cmdc.202300538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/10/2023] [Indexed: 12/08/2023]
Abstract
The lack of new antibiotics and the rapidly rising number of pathogens resistant to antibiotics pose a serious problem to mankind. In bacteria, the cell membrane provides the first line of defence to antibiotics by preventing them from reaching their molecular target. To overcome this entrance barrier, it has been suggested[1] that small Gold-Nanoparticles (AuNP) could possibly function as drug delivery systems for antibiotic ligands. Using actinonin-based ligands, we provide here proof-of-principle of AuNP functionalisation, the capability to bind and inhibit the target protein of the ligand, and the possibility to selectively release the antimicrobial payload. To this end, we successfully synthesised AuNP coated with thio-functionalised actinonin and a derivative. Interactions between 15N-enriched His-peptide deformylase 1-147 from E. coli (His-ecPDF 1-147) and compound-coated AuNP were investigated via 2D 1H-15N-HSQC NMR spectra proving the direct binding to His-ecPDF 1-147. More importantly by adding dithiothreitol (DTT), we show that the derivative is successfully released from AuNPs while still bound to His-ecPDF 1-147. Our findings indicate that AuNP-conjugated ligands can address and bind intracellular target proteins. The system introduced here presents a new delivery platform for antibiotics and allows for the easy optimisation of ligand coated AuNPs.
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Affiliation(s)
- Hendrik Kirschner
- Biochemistry II, Biomolecular NMR Spectroscopy, RUBiospec|NMR and PhenomeCentre@RUBUAR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Milena John
- Inorganic Chemistry I - Bioinorganic Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Tianyi Zhou
- Bioorganic Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaußstraße 20, 42119, Wuppertal, Germany
| | - Nathalie Bachmann
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - André Schultz
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Eckhard Hofmann
- Protein Crystallography, Faculty of Biology and Biotechnology, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Julia Elisabeth Bandow
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Jürgen Scherkenbeck
- Bioorganic Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaußstraße 20, 42119, Wuppertal, Germany
| | - Nils Metzler-Nolte
- Inorganic Chemistry I - Bioinorganic Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Raphael Stoll
- Biochemistry II, Biomolecular NMR Spectroscopy, RUBiospec|NMR and PhenomeCentre@RUBUAR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
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3
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Teucher M, Kucher S, Timachi MH, Wilson CB, Śmiłowicz D, Stoll R, Metzler-Nolte N, Sherwin MS, Han S, Bordignon E. Spectroscopically Orthogonal Spin Labels in Structural Biology at Physiological Temperatures. J Phys Chem B 2023; 127:6668-6674. [PMID: 37490415 PMCID: PMC10405217 DOI: 10.1021/acs.jpcb.3c04497] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/08/2023] [Indexed: 07/27/2023]
Abstract
Electron paramagnetic resonance spectroscopy (EPR) is mostly used in structural biology in conjunction with pulsed dipolar spectroscopy (PDS) methods to monitor interspin distances in biomacromolecules at cryogenic temperatures both in vitro and in cells. In this context, spectroscopically orthogonal spin labels were shown to increase the information content that can be gained per sample. Here, we exploit the characteristic properties of gadolinium and nitroxide spin labels at physiological temperatures to study side chain dynamics via continuous wave (cw) EPR at X band, surface water dynamics via Overhauser dynamic nuclear polarization at X band and short-range distances via cw EPR at high fields. The presented approaches further increase the accessible information content on biomolecules tagged with orthogonal labels providing insights into molecular interactions and dynamic equilibria that are only revealed under physiological conditions.
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Affiliation(s)
- Markus Teucher
- Faculty
of Chemistry and Biochemistry, Ruhr University
of Bochum, Bochum 44801, Germany
| | - Svetlana Kucher
- Faculty
of Chemistry and Biochemistry, Ruhr University
of Bochum, Bochum 44801, Germany
- Department
of Physical Chemistry, University of Geneva, Genève 1211, Switzerland
| | - M. Hadi Timachi
- Faculty
of Chemistry and Biochemistry, Ruhr University
of Bochum, Bochum 44801, Germany
| | - C. Blake Wilson
- Department
of Physics, University of California, Santa
Barbara, Santa
Barbara, California 93106, United States
- Institute
for Terahertz Science and Technology, University
of California, Santa Barbara, Santa
Barbara, California 93106, United States
| | - Dariusz Śmiłowicz
- Faculty
of Chemistry and Biochemistry, Ruhr University
of Bochum, Bochum 44801, Germany
| | - Raphael Stoll
- Faculty
of Chemistry and Biochemistry, Ruhr University
of Bochum, Bochum 44801, Germany
| | - Nils Metzler-Nolte
- Faculty
of Chemistry and Biochemistry, Ruhr University
of Bochum, Bochum 44801, Germany
| | - Mark S. Sherwin
- Department
of Physics, University of California, Santa
Barbara, Santa
Barbara, California 93106, United States
- Institute
for Terahertz Science and Technology, University
of California, Santa Barbara, Santa
Barbara, California 93106, United States
| | - Songi Han
- Institute
for Terahertz Science and Technology, University
of California, Santa Barbara, Santa
Barbara, California 93106, United States
- Department
of Chemistry and Biochemistry, University
of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Enrica Bordignon
- Faculty
of Chemistry and Biochemistry, Ruhr University
of Bochum, Bochum 44801, Germany
- Department
of Physical Chemistry, University of Geneva, Genève 1211, Switzerland
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4
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Arnolds O, Stoll R. Characterization of a fold in TANGO1 evolved from SH3 domains for the export of bulky cargos. Nat Commun 2023; 14:2273. [PMID: 37080980 PMCID: PMC10119292 DOI: 10.1038/s41467-023-37705-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/28/2023] [Indexed: 04/22/2023] Open
Abstract
Bulky cargos like procollagens, apolipoproteins, and mucins exceed the size of conventional COPII vesicles. During evolution a process emerged in metazoans, predominantly governed by the TANGO1 protein family, that organizes cargo at the exit sites of the endoplasmic reticulum and facilitates export by the formation of tunnel-like connections between the ER and Golgi. Hitherto, cargo-recognition appeared to be mediated by an SH3-like domain. Based on structural and dynamic data as well as interaction studies from NMR spectroscopy and microscale thermophoresis presented here, we show that the luminal cargo-recognition domain of TANGO1 adopts a new functional fold for which we suggest the term MOTH (MIA, Otoraplin, TALI/TANGO1 homology) domain. These MOTH domains, as well as an evolutionary intermediate found in invertebrates, constitute a distinct domain family that emerged from SH3 domains and acquired the ability to bind collagen.
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Affiliation(s)
- Oliver Arnolds
- Biomolecular Spectroscopy and RUBiospek|NMR, Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Bochum, Germany
- Structural Genomics Consortium, Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Raphael Stoll
- Biomolecular Spectroscopy and RUBiospek|NMR, Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Bochum, Germany.
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5
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Dellin M, Rohrbeck I, Asrani P, Schreiber JA, Ritter N, Glorius F, Wünsch B, Budde T, Temme L, Strünker T, Stallmeyer B, Tüttelmann F, Meuth SG, Spehr M, Matschke J, Steinbicker A, Gatsogiannis C, Stoll R, Strutz-Seebohm N, Seebohm G. The second PI(3,5)P 2 binding site in the S0 helix of KCNQ1 stabilizes PIP 2-at the primary PI1 site with potential consequences on intermediate-to-open state transition. Biol Chem 2023; 404:241-254. [PMID: 36809224 DOI: 10.1515/hsz-2022-0247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 12/13/2022] [Indexed: 02/23/2023]
Abstract
The Phosphatidylinositol 3-phosphate 5-kinase Type III PIKfyve is the main source for selectively generated phosphatidylinositol 3,5-bisphosphate (PI(3,5)P2), a known regulator of membrane protein trafficking. PI(3,5)P2 facilitates the cardiac KCNQ1/KCNE1 channel plasma membrane abundance and therewith increases the macroscopic current amplitude. Functional-physical interaction of PI(3,5)P2 with membrane proteins and its structural impact is not sufficiently understood. This study aimed to identify molecular interaction sites and stimulatory mechanisms of the KCNQ1/KCNE1 channel via the PIKfyve-PI(3,5)P2 axis. Mutational scanning at the intracellular membrane leaflet and nuclear magnetic resonance (NMR) spectroscopy identified two PI(3,5)P2 binding sites, the known PIP2 site PS1 and the newly identified N-terminal α-helix S0 as relevant for functional PIKfyve effects. Cd2+ coordination to engineered cysteines and molecular modeling suggest that repositioning of S0 stabilizes the channel s open state, an effect strictly dependent on parallel binding of PI(3,5)P2 to both sites.
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Affiliation(s)
- Maurice Dellin
- IfGH-Cellular Electrophysiology, Department of Cardiology and Angiology, University Hospital of Münster, Robert-Koch Str. 45, D-48149, Münster, Germany
| | - Ina Rohrbeck
- IfGH-Cellular Electrophysiology, Department of Cardiology and Angiology, University Hospital of Münster, Robert-Koch Str. 45, D-48149, Münster, Germany
| | - Purva Asrani
- Faculty of Chemistry and Biochemistry, Biomolecular NMR Spectroscopy and RUBiospek|NMR, Ruhr University of Bochum, Universitätsstraße 150, D-44780, Bochum, Germany
| | - Julian A Schreiber
- IfGH-Cellular Electrophysiology, Department of Cardiology and Angiology, University Hospital of Münster, Robert-Koch Str. 45, D-48149, Münster, Germany
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, D-48149, Münster, Germany
| | - Nadine Ritter
- IfGH-Cellular Electrophysiology, Department of Cardiology and Angiology, University Hospital of Münster, Robert-Koch Str. 45, D-48149, Münster, Germany
- GRK 2515, Chemical biology of ion channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Frank Glorius
- GRK 2515, Chemical biology of ion channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, D-48149, Münster, Germany
| | - Bernhard Wünsch
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, D-48149, Münster, Germany
- GRK 2515, Chemical biology of ion channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Thomas Budde
- GRK 2515, Chemical biology of ion channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
- Institute of Physiology I, Westfälische Wilhelms-Universität, Robert-Koch-Str. 27a, D-48149, Münster, Germany
| | - Louisa Temme
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, D-48149, Münster, Germany
- GRK 2515, Chemical biology of ion channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Timo Strünker
- GRK 2515, Chemical biology of ion channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
- Centre of Reproductive Medicine and Andrology, University Hospital Münster, University of Münster, Domagkstraße 11, D-48149, Münster, Germany
- Cells in Motion Interfaculty Centre, University of Münster, Münster, Germany
| | - Birgit Stallmeyer
- Institute of Reproductive Genetics, University of Münster, Vesaliusweg 12-14, D-48149, Münster, Germany
| | - Frank Tüttelmann
- Institute of Reproductive Genetics, University of Münster, Vesaliusweg 12-14, D-48149, Münster, Germany
| | - Sven G Meuth
- Department of Neurology, Heinrich Heine University Düsseldorf, Moorenstraße 5, D-40225, Düsseldorf, Germany
| | - Marc Spehr
- Department of Chemosensation, Institute for Biology II, RWTH Aachen University, Worringerweg 3, D-52074, Aachen, Germany
| | - Johann Matschke
- Institute of Cell Biology (Cancer Research), University Hospital Essen, University of Duisburg-Essen, D-45147, Essen, Germany
| | - Andrea Steinbicker
- Goethe University Frankfurt and University Hospital Frankfurt, Theodor-Stern-Kai 7, D-60590, Frankfurt, Germany
| | - Christos Gatsogiannis
- Institute for Medical Physics and Biophysics and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Münster, Busso-Peus Strasse 10, D-48149, Germany
| | - Raphael Stoll
- Faculty of Chemistry and Biochemistry, Biomolecular NMR Spectroscopy and RUBiospek|NMR, Ruhr University of Bochum, Universitätsstraße 150, D-44780, Bochum, Germany
| | - Nathalie Strutz-Seebohm
- IfGH-Cellular Electrophysiology, Department of Cardiology and Angiology, University Hospital of Münster, Robert-Koch Str. 45, D-48149, Münster, Germany
| | - Guiscard Seebohm
- IfGH-Cellular Electrophysiology, Department of Cardiology and Angiology, University Hospital of Münster, Robert-Koch Str. 45, D-48149, Münster, Germany
- GRK 2515, Chemical biology of ion channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
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6
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Mahmoud EM, Shongwe M, Moghadam ES, Moghimi-Rad P, Stoll R, Abdel-Jalil R. Design, synthesis, and molecular docking study of novel cinnoline derivatives as potential inhibitors of tubulin polymerization. Z NATURFORSCH C 2023; 78:123-131. [PMID: 35993925 DOI: 10.1515/znc-2022-0087] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 07/18/2022] [Indexed: 11/15/2022]
Abstract
The preparation of a novel 4-methylbenzo[h] cinnolines entity via a three-step synthetic protocol is described. Cyclization of the naphthylamidrazones, in the presence of polyphosphoric acid (PPA), furnishes the respective target benzo[h]cinnolines directly. This one-pot synthesis involves intramolecular Friedel-Crafts acylation followed by instant elimination under heating conditions. It is noteworthy that the yield of the product from this step decreases dramatically if the heating is extended beyond 3 h. The target novel cinnolone derivatives were identified by mass spectrometry and their structures elucidated by spectroscopic techniques. Subsequently, molecular docking was performed to shed light on the putative binding mode of the newly synthesized cinnolines. The docking results indicate that these derivatives are potential inhibitors of tubulin polymerization and the best interaction was achieved with a computational ki = 0.5 nM and posed correctly over the lexibulin.
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Affiliation(s)
| | - Musa Shongwe
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Muscat, Sultanate of Oman
| | - Ebrahim Saeedian Moghadam
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Muscat, Sultanate of Oman.,Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1417614411, Iran
| | - Parsa Moghimi-Rad
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1417614411, Iran
| | - Raphael Stoll
- Biomolecular NMR, Ruhr University of Bochum, D-44780, Bochum, Germany
| | - Raid Abdel-Jalil
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Muscat, Sultanate of Oman
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7
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Abdel-Jalil R, Stoll R. Organic chemistry and medicinal applications. Z NATURFORSCH C 2023; 78:91-92. [PMID: 36821642 DOI: 10.1515/znc-2023-0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- Raid Abdel-Jalil
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Raphael Stoll
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Bochum, Germany
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8
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Kollmorgen I, Bachmann N, Molin MD, Degenhart C, Zent E, Pareek V, Koch U, Rybniker J, Metzler-Nolte N, Stoll R, Klebl B, Bandow JE, Scherkenbeck J. A Reinvestigation of the Role of the Sorbic Acid Tail on the Antibacterial and Anti-Tuberculosis Properties of Moiramide B. ChemMedChem 2023:e202200631. [PMID: 36883965 DOI: 10.1002/cmdc.202200631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/27/2023] [Accepted: 03/07/2023] [Indexed: 03/09/2023]
Abstract
Due to worldwide increasing resistances, there is a considerable need for antibacterial compounds with modes of action not yet realized in commercial antibiotics. One such promising structure is the acetyl-CoA carboxylase (ACC) inhibi-tor moiramide B which shows strong antibacterial activity against gram-positive bacteria such as Bacillus subtilis and weaker activities against gram-negative bacteria. However, the narrow structure-activity relationship of the pseudopeptide unit of moiramide B represents a formidable challenge for any opti-mization strategy. In contrast, the lipophilic fatty acid tail is considered an unspe-cific vehicle responsible only for the transport of moiramide into the bac-terial cell. Here we show that the sorbic acid unit, in fact, is highly relevant for ACC inhibition. A hitherto undescribed sub-pocket at the end of the sorbic acid channel binds strongly aromatic rings and allows the development of moiramide derivatives with altered antibacterial profiles including anti-tubercular activity.
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Affiliation(s)
- Irina Kollmorgen
- University of Wuppertal: Bergische Universitat Wuppertal, School of Mathematics and Natural Scienes, GERMANY
| | - Nathalie Bachmann
- Ruhr University Bochum: Ruhr-Universitat Bochum, Applied Microbiology, Faculty of Biology and Biotechnology, GERMANY
| | - Michael Dal Molin
- University of Cologne: Universitat zu Koln, Department I of Internal Medicine, Faculty of Medicine, GERMANY
| | | | - Eldar Zent
- Lead Discovery Center GmbH, Biology, GERMANY
| | - Vikram Pareek
- Ruhr University Bochum: Ruhr-Universitat Bochum, Applied Microbiology, Faculty of Biology and Biotechnology, GERMANY
| | - Uwe Koch
- Lead Discovery Center GmbH, Chemistry, GERMANY
| | - Jan Rybniker
- University of Cologne: Universitat zu Koln, Department I of Internal Medicine, Faculty of Medicine, GERMANY
| | - Nils Metzler-Nolte
- Ruhr University Bochum: Ruhr-Universitat Bochum, Inorganic Chemistry I, Bioinorganic Chemistry, GERMANY
| | - Raphael Stoll
- Ruhr University Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, Biomolecular Spectroscopy and RUBiospec
- NMR, GERMANY
| | - Bert Klebl
- Lead discover Center GmbH, Chemistry, GERMANY
| | - Julia Elisabeth Bandow
- Ruhr University Bochum: Ruhr-Universitat Bochum, Applied Microbiology, Faculty of Biology and Biotechnology, GERMANY
| | - Jürgen Scherkenbeck
- University of Wuppertal: Bergische Universitat Wuppertal, Chemistry and Biology, Gaußstraße 20, 42119, Wuppertal, GERMANY
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9
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Abdel-Jalil R, Stoll R. Bioactive Peptides and Proteins in Medicinal Chemistry. Curr Med Chem 2022; 29:6335. [DOI: 10.2174/092986732942221012104710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Raid Abdel-Jalil
- Department of Chemistry, College of Science
Sultan Qaboos University,
Muscat, Oman
| | - Raphael Stoll
- Faculty of Chemistry and Biochemistry,
Ruhr University of Bochum,
Bochum, Germany
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10
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Abdel-Jalil R, Stoll R. Tribute to the Late Prof. Wolfgang Voelter – A Revered
World-Class Scientist. Curr Med Chem 2022. [DOI: 10.2174/092986732942221011115726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Raid Abdel-Jalil
- Department of Chemistry, College of Science
Sultan Qaboos University, Muscat, Oman
| | - Raphael Stoll
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Bochum, Germany
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11
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Jeuken S, Shkura O, Röger M, Brickau V, Choidas A, Degenhart C, Gülden D, Klebl B, Koch U, Stoll R, Scherkenbeck J. Synthesis, Biological Evaluation, and Binding Mode of a New Class of Oncogenic K-Ras4b Inhibitors. ChemMedChem 2022; 17:e202200392. [PMID: 35979853 PMCID: PMC9826232 DOI: 10.1002/cmdc.202200392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/15/2022] [Indexed: 01/14/2023]
Abstract
Ras proteins are implicated in some of the most common life-threatening cancers. Despite intense research during the past three decades, progress towards small-molecule inhibitors of mutant Ras proteins still has been limited. Only recently has significant progress been made, in particular with ligands for binding sites located in the switch II and between the switch I and switch II region of K-Ras4B. However, the structural diversity of inhibitors identified for those sites to date is narrow. Herein, we show that hydrazones and oxime ethers of specific bis(het)aryl ketones represent structurally variable chemotypes for new GDP/GTP-exchange inhibitors with significant cellular activity.
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Affiliation(s)
- Stephan Jeuken
- Faculty of Mathematics and Natural SciencesUniversity of WuppertalGaussstrasse 2042119WuppertalGermany
| | - Oleksandr Shkura
- Faculty of Chemistry and BiochemistryBiomolecular Spectroscopy and RUBiospec | NMRUniversity of BochumUniversitätsstrasse 15044780BochumGermany
| | - Marc Röger
- Faculty of Mathematics and Natural SciencesUniversity of WuppertalGaussstrasse 2042119WuppertalGermany
| | - Victoria Brickau
- Lead Discovery Center GmbHOtto-Hahn-Strasse 1544227DortmundGermany
| | - Axel Choidas
- Lead Discovery Center GmbHOtto-Hahn-Strasse 1544227DortmundGermany
| | | | - Daniel Gülden
- Faculty of Mathematics and Natural SciencesUniversity of WuppertalGaussstrasse 2042119WuppertalGermany
| | - Bert Klebl
- Lead Discovery Center GmbHOtto-Hahn-Strasse 1544227DortmundGermany
| | - Uwe Koch
- Lead Discovery Center GmbHOtto-Hahn-Strasse 1544227DortmundGermany
| | - Raphael Stoll
- Faculty of Chemistry and BiochemistryBiomolecular Spectroscopy and RUBiospec | NMRUniversity of BochumUniversitätsstrasse 15044780BochumGermany
| | - Jürgen Scherkenbeck
- Faculty of Mathematics and Natural SciencesUniversity of WuppertalGaussstrasse 2042119WuppertalGermany
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12
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Asrani P, Seebohm G, Stoll R. Potassium viroporins as model systems for understanding eukaryotic ion channel behaviour. Virus Res 2022; 320:198903. [PMID: 36037849 DOI: 10.1016/j.virusres.2022.198903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/29/2022]
Abstract
Ion channels are membrane proteins essential for a plethora of cellular functions including maintaining cell shape, ion homeostasis, cardiac rhythm and action potential in neurons. The complexity and often extensive structure of eukaryotic membrane proteins makes it difficult to understand their basic biological regulation. Therefore, this article suggests, viroporins - the miniature versions of eukaryotic protein homologs from viruses - might serve as model systems to provide insights into behaviour of eukaryotic ion channels in general. The structural requirements for correct assembly of the channel along with the basic functional properties of a K+ channel exist in the minimal design of the viral K+ channels from two viruses, Chlorella virus (Kcv) and Ectocarpus siliculosus virus (Kesv). These small viral proteins readily assemble into tetramers and they sort in cells to distinct target membranes. When these viruses-encoded channels are expressed into the mammalian cells, they utilise their protein machinery and hence can serve as excellent tools to study the cells protein sorting machinery. This combination of small size and robust function makes viral K+ channels a valuable model system for detection of basic structure-function correlations. It is believed that molecular and physiochemical analyses of these viroporins may serve as basis for the development of inhibitors or modulators to ion channel activity for targeting ion channel diseases - so called channelopathies. Therefore, it may provide a potential different scope for molecular pharmacology studies aiming at novel and innovative therapeutics associated with channel related diseases. This article reviews the structural and functional properties of Kcv and Kesv upon expression in mammalian cells and Xenopus oocytes. The mechanisms behind differential protein sorting in Kcv and Kesv are also thoroughly discussed.
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Affiliation(s)
- Purva Asrani
- Biomolecular Spectroscopy and RUBiospec|NMR, Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Bochum D-44780, Germany
| | - Guiscard Seebohm
- Institute for Genetics of Heart Diseases (IfGH), Department of Cardiovascular Medicine, University Hospital Münster, Münster D-48149, Germany
| | - Raphael Stoll
- Biomolecular Spectroscopy and RUBiospec|NMR, Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Bochum D-44780, Germany.
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13
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Jaegers J, Haferkamp S, Arnolds O, Moog D, Wrobeln A, Nocke F, Cantore M, Pütz S, Hartwig A, Franzkoch R, Psathaki OE, Jastrow H, Schauerte C, Stoll R, Kirsch M, Ferenz KB. Deciphering the Emulsification Process to Create an Albumin-Perfluorocarbon-(o/w) Nanoemulsion with High Shelf Life and Bioresistivity. Langmuir 2022; 38:10351-10361. [PMID: 35969658 PMCID: PMC9435530 DOI: 10.1021/acs.langmuir.1c03388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 07/12/2022] [Indexed: 06/15/2023]
Abstract
This work aimed at the development of a stable albumin-perfluorocarbon (o/w) emulsion as an artificial oxygen carrier suitable for clinical application. So far, albumin-perfluorocarbon-(o/w) emulsions have been successfully applied in preclinical trials. Cross-linking a variety of different physical and chemical methods for the characterization of an albumin-perfluorocarbon (PFC)-(o/w) emulsion was necessary to gain a deep understanding of its specific emulsification processes during high-pressure homogenization. High-pressure homogenization is simple but incorporates complex physical reactions, with many factors influencing the formation of PFC droplets and their coating. This work describes and interprets the impact of albumin concentration, homogenization pressure, and repeated microfluidizer passages on PFC-droplet formation; its influence on storage stability; and the overcoming of obstacles in preparing stable nanoemulsions. The applied methods comprise dynamic light scattering, static light scattering, cryo- and non-cryo-scanning and transmission electron microscopies, nuclear magnetic resonance spectroscopy, light microscopy, amperometric oxygen measurements, and biochemical methods. The use of this wide range of methods provided a sufficiently comprehensive picture of this polydisperse emulsion. Optimization of PFC-droplet formation by means of temperature and pressure gradients results in an emulsion with improved storage stability (tested up to 5 months) that possibly qualifies for clinical applications. Adaptations in the manufacturing process strikingly changed the physical properties of the emulsion but did not affect its oxygen capacity.
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Affiliation(s)
- Johannes Jaegers
- University
of Duisburg-Essen, Institute of Physiology, University Hospital Essen, Hufelandstraße 55, 45122 Essen, Germany
- Department
of Biomedicine, Aarhus University, Høegh-Guldbergs Gade 10, bygning
1116, 8000 Aarhus
C, Denmark
| | - Sven Haferkamp
- SOLID-CHEM
GmbH, Universitätsstraße
136, 44799 Bochum, Germany
| | - Oliver Arnolds
- Biomolecular
Spectroscopy and RUBiospek|NMR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Daniel Moog
- Pulveranalyse
Dipl.-Ing. Daniel Moog, Roitzheimer Str. 61, 53879 Euskirchen, Germany
| | - Anna Wrobeln
- University
of Duisburg-Essen, Institute of Physiology, University Hospital Essen, Hufelandstraße 55, 45122 Essen, Germany
| | - Fabian Nocke
- University
of Duisburg-Essen, Institute of Physiology, University Hospital Essen, Hufelandstraße 55, 45122 Essen, Germany
| | - Miriam Cantore
- University
of Duisburg-Essen, Institute of Physiology, University Hospital Essen, Hufelandstraße 55, 45122 Essen, Germany
| | - Stefanie Pütz
- Biomolecular
Spectroscopy and RUBiospek|NMR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Anne Hartwig
- Physical
Chemistry-innoFSPEC and Potsdam Transfer, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Rico Franzkoch
- CellNanOs
(Center of Cellular Nanoanalytics), iBiOs (Integrated Bioimaging Facility), University of Osnabrück, Barbarastr. 11, 49076 Osnabrück, Germany
| | - Olympia Ekaterini Psathaki
- CellNanOs
(Center of Cellular Nanoanalytics), iBiOs (Integrated Bioimaging Facility), University of Osnabrück, Barbarastr. 11, 49076 Osnabrück, Germany
| | - Holger Jastrow
- Institute
of Anatomy, University of Duisburg-Essen, University Hospital Essen, Hufelandstr. 55, Essen D-45147, Germany
- Institute
for Experimental Immunology and Imaging, Imaging Center Essen, Electron
Microscopy Unit, University of Duisburg-Essen, Hufelandstr. 55, Essen D-45147, Germany
| | | | - Raphael Stoll
- Biomolecular
Spectroscopy and RUBiospek|NMR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Michael Kirsch
- University
of Duisburg-Essen, Institute of Physiological Chemistry, University Hospital Essen, Hufelandstraße 55, 45122 Essen, Germany
| | - Katja Bettina Ferenz
- University
of Duisburg-Essen, Institute of Physiology, University Hospital Essen, Hufelandstraße 55, 45122 Essen, Germany
- CeNIDE (Center for Nanointegration Duisburg-Essen) University of
Duisburg-Essen, Carl-Benz-Strasse
199, 47057 Duisburg, Germany
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14
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Moghadam ES, Al-Sadi AM, Talebi M, Amanlou M, Stoll R, Amini M, Abdel-Jalil R. Novel 5-fluoro-6-(4-(2-fluorophenyl)piperazin-1-yl)-2-(4-(4-methylpiperazin-1-yl)phenyl)-1H-benzo[d]imidazole derivatives as promising urease inhibitors. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180819666220811145303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Highly pathogenic bacteria colonize and maintain themselves with the aid of an enzyme called urease. Consequently, inhibiting urease enzymes can be a promising method for preventing ureolytic bacterial infections.
Objective:
Synthesis and bioactivity screening of a novel series of benzimidazole derivatives.
Methods:
Nine novel benzimidazole derivatives 10α-Ɣ were synthesized, isolated, and their structures were elucidated by 1H-NMR and IR spectroscopic techniques besides HRMS. The urease inhibition activity of these compounds was evaluated using the standard urease enzyme inhibition kit. An MTT assay was performed on NIH-3T3 cell line to investigate the cytotoxicity profile.
Results:
All benzimidazoles 10α-Ɣ exhibited higher urease inhibition activity (3.06–4.40 µM) than the reference standards thiourea and hydroxyurea (IC50: 22 and 100 µM, respectively). 10Ɣ-1 and 10α-1 exhibited the best activity with the IC50 values of 3.06 and 3.13 µM, respectively. Investigate of the cytotoxicity profile of the target compound, showed all 10α-Ɣ have IC50 values higher than 50 µM on tested cell line.
Conclusion:
The results showed that synthesized benzimidazole derivatives can be highly effective as urease inhibitors.
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Affiliation(s)
- Ebrahim Saeedian Moghadam
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat, P.O. Box 36, P.C. 123, Sultanate of Oman
| | - Abdullah Mohammed Al-Sadi
- Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman
| | - Meysam Talebi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 1417614411, Iran
| | - Massoud Amanlou
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 1417614411, Iran.
- Drug Design and Development Research Center, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
| | - Raphael Stoll
- Biomolecular NMR, Ruhr University of Bochum, D-44780 Bochum, Germany
| | - Mohsen Amini
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 1417614411, Iran.
- Drug Design and Development Research Center, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
| | - Raid Abdel-Jalil
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat, P.O. Box 36, P.C. 123, Sultanate of Oman
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15
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Moghadam ES, Al‐Sadi AM, Talebi M, Amanlou M, Stoll R, Amini M, Abdel‐Jalil R. Thiosemicarbazone Derivatives Act as Potent Urease Inhibitors; Synthesis, Bioactivity Screening and Molecular Docking Study. ChemistrySelect 2022. [DOI: 10.1002/slct.202200860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ebrahim Saeedian Moghadam
- Department of Chemistry College of Science Sultan Qaboos University Muscat, P.O. Box 36, P.C. 123, Sultanate of Oman
| | - Abdullah Mohammed Al‐Sadi
- Department of Crop Sciences College of Agricultural and Marine Sciences Sultan Qaboos University Muscat Oman
| | - Meysam Talebi
- Department of Medicinal Chemistry Faculty of Pharmacy Tehran University of Medical Sciences Tehran 1417614411 Iran
| | - Massoud Amanlou
- Department of Medicinal Chemistry Faculty of Pharmacy Tehran University of Medical Sciences Tehran 1417614411 Iran
- Drug Design and Development Research Center The Institute of Pharmaceutical Sciences (TIPS) Tehran University of Medical Sciences Tehran Iran
| | - Raphael Stoll
- Biomolecular NMR Ruhr University of Bochum D 44780 Bochum Germany
| | - Mohsen Amini
- Department of Medicinal Chemistry Faculty of Pharmacy Tehran University of Medical Sciences Tehran 1417614411 Iran
- Drug Design and Development Research Center The Institute of Pharmaceutical Sciences (TIPS) Tehran University of Medical Sciences Tehran Iran
| | - Raid Abdel‐Jalil
- Department of Chemistry College of Science Sultan Qaboos University Muscat, P.O. Box 36, P.C. 123, Sultanate of Oman
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16
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Franz M, Mörchen B, Degenhart C, Gülden D, Shkura O, Wolters D, Koch U, Klebl B, Stoll R, Helfrich I, Scherkenbeck J. Sequence-Selective Covalent CaaX-Box Receptors Prevent Farnesylation of Oncogenic Ras Proteins and Impact MAPK/PI3 K Signaling. ChemMedChem 2021; 16:2504-2514. [PMID: 33899342 PMCID: PMC8453727 DOI: 10.1002/cmdc.202100167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Indexed: 01/21/2023]
Abstract
Oncogenic Ras proteins are implicated in the most common life-threatening cancers. Despite intense research over the past two decades, the progress towards small-molecule inhibitors has been limited. One reason for this failure is that Ras proteins interact with their effectors only via protein-protein interactions, which are notoriously difficult to address with small organic molecules. Herein we describe an alternative strategy, which prevents farnesylation and subsequent membrane insertion, a prerequisite for the activation of Ras proteins. Our approach is based on sequence-selective supramolecular receptors which bind to the C-terminal farnesyl transferase recognition unit of Ras and Rheb proteins and covalently modify the essential cysteine in the so-called CaaX-box.
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Affiliation(s)
- Matthias Franz
- Faculty of Mathematics and Natural SciencesUniversity of Wuppertal42119WuppertalGermany
| | - Britta Mörchen
- Vascular Oncology & MetastasisUniversity Hospital Essen45147EssenGermany
| | | | - Daniel Gülden
- Faculty of Mathematics and Natural SciencesUniversity of Wuppertal42119WuppertalGermany
| | - Oleksandr Shkura
- Faculty of Chemistry and BiochemistryRuhr-University Bochum44780BochumGermany
| | - Dirk Wolters
- Faculty of Chemistry and BiochemistryRuhr-University Bochum44780BochumGermany
| | - Uwe Koch
- Lead Discovery Center GmbH44227DortmundGermany
| | - Bert Klebl
- Lead Discovery Center GmbH44227DortmundGermany
| | - Raphael Stoll
- Faculty of Chemistry and BiochemistryRuhr-University Bochum44780BochumGermany
| | - Iris Helfrich
- Vascular Oncology & MetastasisUniversity Hospital Essen45147EssenGermany
| | - Jürgen Scherkenbeck
- Faculty of Mathematics and Natural SciencesUniversity of Wuppertal42119WuppertalGermany
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17
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Zabret J, Bohn S, Schuller SK, Arnolds O, Möller M, Meier-Credo J, Liauw P, Chan A, Tajkhorshid E, Langer JD, Stoll R, Krieger-Liszkay A, Engel BD, Rudack T, Schuller JM, Nowaczyk MM. Structural insights into photosystem II assembly. Nat Plants 2021; 7:524-538. [PMID: 33846594 PMCID: PMC8094115 DOI: 10.1038/s41477-021-00895-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 03/04/2021] [Indexed: 05/07/2023]
Abstract
Biogenesis of photosystem II (PSII), nature's water-splitting catalyst, is assisted by auxiliary proteins that form transient complexes with PSII components to facilitate stepwise assembly events. Using cryo-electron microscopy, we solved the structure of such a PSII assembly intermediate from Thermosynechococcus elongatus at 2.94 Å resolution. It contains three assembly factors (Psb27, Psb28 and Psb34) and provides detailed insights into their molecular function. Binding of Psb28 induces large conformational changes at the PSII acceptor side, which distort the binding pocket of the mobile quinone (QB) and replace the bicarbonate ligand of non-haem iron with glutamate, a structural motif found in reaction centres of non-oxygenic photosynthetic bacteria. These results reveal mechanisms that protect PSII from damage during biogenesis until water splitting is activated. Our structure further demonstrates how the PSII active site is prepared for the incorporation of the Mn4CaO5 cluster, which performs the unique water-splitting reaction.
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Affiliation(s)
- Jure Zabret
- Department of Plant Biochemistry, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Stefan Bohn
- Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Sandra K Schuller
- Department of Structural Cell Biology, Max Planck Institute of Biochemistry, Martinsried, Germany
- CryoEM of Molecular Machines, SYNMIKRO Research Center and Department of Chemistry, Philipps University of Marburg, Marburg, Germany
| | - Oliver Arnolds
- Biomolecular Spectroscopy and RUBiospek|NMR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Madeline Möller
- Department of Plant Biochemistry, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | | | - Pasqual Liauw
- Department of Plant Biochemistry, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Aaron Chan
- NIH Center for Macromolecular Modeling and Bioinformatics, Beckman Institute for Advanced Science and Technology, Department of Biochemistry, and Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Emad Tajkhorshid
- NIH Center for Macromolecular Modeling and Bioinformatics, Beckman Institute for Advanced Science and Technology, Department of Biochemistry, and Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Julian D Langer
- Proteomics, Max Planck Institute of Biophysics, Frankfurt, Germany
- Proteomics, Max Planck Institute for Brain Research, Frankfurt, Germany
| | - Raphael Stoll
- Biomolecular Spectroscopy and RUBiospek|NMR, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Anja Krieger-Liszkay
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, Gif-sur-Yvette, France
| | - Benjamin D Engel
- Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, Martinsried, Germany
- Helmholtz Pioneer Campus, Helmholtz Zentrum München, Neuherberg, Germany
- Department of Chemistry, Technical University of Munich, Garching, Germany
| | - Till Rudack
- Biospectroscopy, Center for Protein Diagnostics (ProDi), Ruhr University Bochum, Bochum, Germany.
- Department of Biophysics, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany.
| | - Jan M Schuller
- Department of Structural Cell Biology, Max Planck Institute of Biochemistry, Martinsried, Germany.
- CryoEM of Molecular Machines, SYNMIKRO Research Center and Department of Chemistry, Philipps University of Marburg, Marburg, Germany.
| | - Marc M Nowaczyk
- Department of Plant Biochemistry, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany.
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18
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Assafa TE, Nandi S, Śmiłowicz D, Galazzo L, Teucher M, Elsner C, Pütz S, Bleicken S, Robin AY, Westphal D, Uson I, Stoll R, Czabotar PE, Metzler-Nolte N, Bordignon E. Biophysical Characterization of Pro-apoptotic BimBH3 Peptides Reveals an Unexpected Capacity for Self-Association. Structure 2020; 29:114-124.e3. [PMID: 32966763 DOI: 10.1016/j.str.2020.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/13/2020] [Accepted: 08/29/2020] [Indexed: 01/11/2023]
Abstract
Bcl-2 proteins orchestrate the mitochondrial pathway of apoptosis, pivotal for cell death. Yet, the structural details of the conformational changes of pro- and antiapoptotic proteins and their interactions remain unclear. Pulse dipolar spectroscopy (double electron-electron resonance [DEER], also known as PELDOR) in combination with spin-labeled apoptotic Bcl-2 proteins unveils conformational changes and interactions of each protein player via detection of intra- and inter-protein distances. Here, we present the synthesis and characterization of pro-apoptotic BimBH3 peptides of different lengths carrying cysteines for labeling with nitroxide or gadolinium spin probes. We show by DEER that the length of the peptides modulates their homo-interactions in the absence of other Bcl-2 proteins and solve by X-ray crystallography the structure of a BimBH3 tetramer, revealing the molecular details of the inter-peptide interactions. Finally, we prove that using orthogonal labels and three-channel DEER we can disentangle the Bim-Bim, Bcl-xL-Bcl-xL, and Bim-Bcl-xL interactions in a simplified interactome.
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Affiliation(s)
- Tufa E Assafa
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Sukhendu Nandi
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Dariusz Śmiłowicz
- Chair of Inorganic Chemistry I - Bioinorganic Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Laura Galazzo
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Markus Teucher
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Christina Elsner
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Stefanie Pütz
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Stephanie Bleicken
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Adeline Y Robin
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Dana Westphal
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia; Department of Dermatology, Medical Faculty and University Hospital Dresden, TU Dresden, Dresden, Germany
| | - Isabel Uson
- Crystallographic Methods, Institute of Molecular Biology of Barcelona (IBMB-CSIC), Barcelona, Spain; ICREA, Baldiri Pg. Lluís Companys 23, 08010 Barcelona, Spain
| | - Raphael Stoll
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Peter E Czabotar
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Nils Metzler-Nolte
- Chair of Inorganic Chemistry I - Bioinorganic Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Enrica Bordignon
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany.
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19
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Kohl B, Zhong X, Herrmann C, Stoll R. Phosphorylation orchestrates the structural ensemble of the intrinsically disordered protein HMGA1a and modulates its DNA binding to the NFκB promoter. Nucleic Acids Res 2020; 47:11906-11920. [PMID: 31340016 PMCID: PMC7145567 DOI: 10.1093/nar/gkz614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 06/14/2019] [Accepted: 07/05/2019] [Indexed: 12/27/2022] Open
Abstract
High Mobility Group Protein A1a (HMGA1a) is a highly abundant nuclear protein, which plays a crucial role during embryogenesis, cell differentiation, and neoplasia. Here, we present the first ever NMR-based structural ensemble of full length HMGA1a. Our results show that the protein is not completely random coil but adopts a compact structure consisting of transient long-range contacts, which is regulated by post-translational phosphorylation. The CK2-, cdc2- and cdc2/CK2-phosphorylated forms of HMGA1a each exhibit a different binding affinity towards the PRD2 element of the NFκB promoter. Our study identifies connected regions between phosphorylation sites in the wildtype ensemble that change considerably upon phosphorylation, indicating that these posttranslational modifications sites are part of an electrostatic contact network that alters the structural ensemble by shifting the conformational equilibrium. Moreover, ITC data reveal that the CK2-phosphorylated HMGA1a exhibits a different DNA promoter binding affinity for the PRD2 element. Furthermore, we present the first structural model for AT-hook 1 of HMGA1a that can adopt a transient α-helical structure, which might serve as an additional regulatory mechanism in HMAG1a. Our findings will help to develop new therapeutic strategies against HMGA1a-associated cancers by taking posttranslational modifications into consideration.
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Affiliation(s)
- Bastian Kohl
- Faculty of Chemistry and Biochemistry, Biomolecular NMR Spectroscopy, Ruhr University of Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Xueyin Zhong
- Faculty of Chemistry and Biochemistry, Biomolecular NMR Spectroscopy, Ruhr University of Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Christian Herrmann
- Faculty of Chemistry and Biochemistry, Protein Interactions, Ruhr University of Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Raphael Stoll
- Faculty of Chemistry and Biochemistry, Biomolecular NMR Spectroscopy, Ruhr University of Bochum, Universitätsstraße 150, 44780 Bochum, Germany
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20
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Sutar RL, Engelage E, Stoll R, Huber SM. Titelbild: Zweizähnige chirale Bis(imidazolium)‐basierte Halogenbrückendonoren: Synthese und Anwendungen in enantioselektiver Erkennung und Katalyse (Angew. Chem. 17/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Revannath L. Sutar
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Elric Engelage
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Raphael Stoll
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Stefan M. Huber
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
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21
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Sutar RL, Engelage E, Stoll R, Huber SM. Bidentate Chiral Bis(imidazolium)-Based Halogen-Bond Donors: Synthesis and Applications in Enantioselective Recognition and Catalysis. Angew Chem Int Ed Engl 2020; 59:6806-6810. [PMID: 32045504 PMCID: PMC7187470 DOI: 10.1002/anie.201915931] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Indexed: 01/13/2023]
Abstract
Even though halogen bonding-the noncovalent interaction between electrophilic halogen substituents and Lewis bases-has now been established in molecular recognition and catalysis, its use in enantioselective processes is still very rarely explored. Herein, we present the synthesis of chiral bidentate halogen-bond donors based on two iodoimidazolium units with rigidly attached chiral sidearms. With these Lewis acids, chiral recognition of a racemic diamine is achieved in NMR studies. DFT calculations support a 1:1 interaction of the halogen-bond donor with both enantiomers and indicate that the chiral recognition is based on a different spatial orientation of the Lewis bases in the halogen-bonded complexes. In addition, moderate enantioselectivity is achieved in a Mukaiyama aldol reaction with a preorganized variant of the chiral halogen-bond donor. This represents the first case in which asymmetric induction was realized with a pure halogen-bond donor lacking any additional active functional groups.
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Affiliation(s)
- Revannath L. Sutar
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Elric Engelage
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Raphael Stoll
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Stefan M. Huber
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
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22
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Sutar RL, Engelage E, Stoll R, Huber SM. Zweizähnige chirale Bis(imidazolium)‐basierte Halogenbrückendonoren: Synthese und Anwendungen in enantioselektiver Erkennung und Katalyse. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915931] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Revannath L. Sutar
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Elric Engelage
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Raphael Stoll
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Stefan M. Huber
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
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23
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Sutar RL, Engelage E, Stoll R, Huber SM. Cover Picture: Bidentate Chiral Bis(imidazolium)‐Based Halogen‐Bond Donors: Synthesis and Applications in Enantioselective Recognition and Catalysis (Angew. Chem. Int. Ed. 17/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/anie.202003880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Revannath L. Sutar
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Elric Engelage
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Raphael Stoll
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Stefan M. Huber
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
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Kohl B, Granitzka V, Singh A, Quintas P, Xiromeriti E, Mörtel F, Wright PE, Kroon G, Dyson HJ, Stoll R. Comparison of backbone dynamics of the p50 dimerization domain of NFκB in the homodimeric transcription factor NFκB1 and in its heterodimeric complex with RelA (p65). Protein Sci 2019; 28:2064-2072. [PMID: 31587407 PMCID: PMC6863704 DOI: 10.1002/pro.3736] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 11/25/2022]
Abstract
The nuclear factor of kappa light polypeptide gene enhancer in B‐cells (NFκB) transcription factors play a critical role in human immune response. The family includes homodimers and heterodimers of five component proteins, which mediate different transcriptional responses and bind preferentially to different DNA sequences. Crystal structures of DNA complexes show that the dimers of the Rel‐homology regions are structurally very similar. Differing DNA sequence preference together with structural similarity suggests that the dimers may differ in their dynamics. In this study, we present the first near‐complete 15N, 13Cα/β, and HN backbone resonance assignments of two dimers of the dimerization domain (DD) of the NFκB1 (p50) protein (residues 241–351): the homodimer of two p50 domains and a heterodimer of the p50 DD with the p65 DD. As expected, the two dimers behave very similarly, with chemical shift differences between them largely concentrated in the dimer interface and attributable to specific differences in the amino acid sequences of p50 and p65. A comparison of the picosecond‐nanosecond dynamics of the homo‐ and heterodimers also shows that the environment of p50 is similar, with an overall slightly reduced correlation time for the homodimer compared to the heterodimer, consistent with its slightly smaller molecular weight. These results demonstrate that NMR spectroscopy can be used to explore subtle changes in structure and dynamics that have the potential to give insights into differences in specificity that can be exploited in the design of new therapeutic agents.
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Affiliation(s)
- Bastian Kohl
- Biomolecular NMR spectroscopy, Ruhr University of Bochum, Bochum, Germany
| | - Vanessa Granitzka
- Biomolecular NMR spectroscopy, Ruhr University of Bochum, Bochum, Germany
| | - Amrinder Singh
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California
| | - Pedro Quintas
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California
| | - Elli Xiromeriti
- Biomolecular NMR spectroscopy, Ruhr University of Bochum, Bochum, Germany
| | - Fabian Mörtel
- Biomolecular NMR spectroscopy, Ruhr University of Bochum, Bochum, Germany
| | - Peter E Wright
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California
| | - Gerard Kroon
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California
| | - H Jane Dyson
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California
| | - Raphael Stoll
- Biomolecular NMR spectroscopy, Ruhr University of Bochum, Bochum, Germany
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25
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Mörchen B, Shkura O, Stoll R, Helfrich I. Targeting the "undruggable" RAS - new strategies - new hope? Cancer Drug Resist 2019; 2:813-826. [PMID: 35582595 PMCID: PMC8992515 DOI: 10.20517/cdr.2019.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/25/2019] [Accepted: 06/04/2019] [Indexed: 06/15/2023]
Abstract
K-RAS is the most frequently mutated oncogene in solid tumors, such as pancreatic, colon or lung cancer. The GTPase K-RAS can either be in an active (GTP-loaded) or inactive (GDP-loaded) form. In its active form K-RAS forwards signals from growth factors, cytokines or hormones to the nucleus, regulating essential pathways, such as cell proliferation and differentiation. In turn, activating somatic mutations of this proto-oncogene deregulate the complex interplay between GAP (GTPase-activating) - and GEF (Guanine nucleotide exchange factor) - proteins, driving neoplastic transformation. Due to a rather shallow surface, K-RAS lacks proper binding pockets for small molecules, hindering drug development over the past thirty years. This review summarizes recent progress in the development of low molecular antagonists and further shows insights of a newly described interaction between mutant K-RAS signaling and PD-L1 induced immunosuppression, giving new hope for future treatments of K-RAS mutated cancer.
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Affiliation(s)
- Britta Mörchen
- Skin Cancer Unit of the Dermatology Department, Medical Faculty, University Duisburg-Essen, West German Cancer Center, Essen 45147, Germany
- German Cancer Consortium (DKTK) partner site Düsseldorf/Essen, Essen 45147, Germany
| | - Oleksandr Shkura
- Biomolecular NMR, Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Bochum D-44780, Germany
| | - Raphael Stoll
- Biomolecular NMR, Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Bochum D-44780, Germany
- Both authors contribute equally
| | - Iris Helfrich
- Skin Cancer Unit of the Dermatology Department, Medical Faculty, University Duisburg-Essen, West German Cancer Center, Essen 45147, Germany
- German Cancer Consortium (DKTK) partner site Düsseldorf/Essen, Essen 45147, Germany
- Both authors contribute equally
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26
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Dicks M, Kock G, Kohl B, Zhong X, Pütz S, Heumann R, Erdmann KS, Stoll R. The binding affinity of PTPN13's tandem PDZ2/3 domain is allosterically modulated. BMC Mol Cell Biol 2019; 20:23. [PMID: 31286859 PMCID: PMC6615252 DOI: 10.1186/s12860-019-0203-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 06/02/2019] [Indexed: 11/24/2022] Open
Abstract
Background Protein tyrosine phosphatase PTPN13, also known as PTP-BL in mice, is a large multi-domain non-transmembrane scaffolding protein with a molecular mass of 270 kDa. It is involved in the regulation of several cellular processes such as cytokinesis and actin-cytoskeletal rearrangement. The modular structure of PTPN13 consists of an N-terminal KIND domain, a FERM domain, and five PDZ domains, followed by a C-terminal protein tyrosine phosphatase domain. PDZ domains are among the most abundant protein modules and they play a crucial role in signal transduction of protein networks. Results Here, we have analysed the binding characteristics of the isolated PDZ domains 2 and 3 from PTPN13 and compared them to the tandem domain PDZ2/3, which interacts with 12 C-terminal residues of the tumour suppressor protein of APC, using heteronuclear multidimensional NMR spectroscopy. Furthermore, we could show for the first time that PRK2 is a weak binding partner of PDZ2 and we demonstrate that the presence of PDZ3 alters the binding affinity of PDZ2 for APC, suggesting an allosteric effect and thereby modulating the binding characteristics of PDZ2. A HADDOCK-based molecular model of the PDZ2/3 tandem domain from PTPN13 supports these results. Conclusions Our study of tandem PDZ2/3 in complex with APC suggests that the interaction of PDZ3 with PDZ2 induces an allosteric modulation within PDZ2 emanating from the back of the domain to the ligand binding site. Thus, the modified binding preference of PDZ2 for APC could be explained by an allosteric effect and provides further evidence for the pivotal function of PDZ2 in the PDZ123 domain triplet within PTPN13.
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Affiliation(s)
- Markus Dicks
- Biomolecular NMR, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, 44780, Bochum, Germany
| | - Gerd Kock
- Biomolecular NMR, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, 44780, Bochum, Germany
| | - Bastian Kohl
- Biomolecular NMR, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, 44780, Bochum, Germany
| | - Xueyin Zhong
- Biomolecular NMR, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, 44780, Bochum, Germany
| | - Stefanie Pütz
- Biomolecular NMR, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, 44780, Bochum, Germany
| | - Rolf Heumann
- Biochemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, 44780, Bochum, Germany
| | - Kai S Erdmann
- Department of Biomedical Science, University of Sheffield, S10 2TN, Sheffield, UK
| | - Raphael Stoll
- Biomolecular NMR, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, 44780, Bochum, Germany.
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27
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Berger N, Wollny LJB, Sokkar P, Mittal S, Mieres-Perez J, Stoll R, Sander W, Sanchez-Garcia E. Front Cover: Solvent-Enhanced Conformational Flexibility of Cyclic Tetrapeptides (ChemPhysChem 13/2019). Chemphyschem 2019. [DOI: 10.1002/cphc.201900598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nadja Berger
- Organische Chemie II; Ruhr-University of Bochum; Universitätsstr. 150 44780 Bochum Germany
| | - Laura J. B. Wollny
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Pandian Sokkar
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical Biotechnology; University of Duisburg-Essen; Universitätsstr. 2 45141 Essen
| | - Sumit Mittal
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical Biotechnology; University of Duisburg-Essen; Universitätsstr. 2 45141 Essen
| | - Joel Mieres-Perez
- Computational Biochemistry, Center of Medical Biotechnology; University of Duisburg-Essen; Universitätsstr. 2 45141 Essen
| | - Raphael Stoll
- Biomolecular NMR Spectroscopy; Ruhr-University of Bochum; Universitätsstr. 150 44780 Bochum Germany
| | - Wolfram Sander
- Organische Chemie II; Ruhr-University of Bochum; Universitätsstr. 150 44780 Bochum Germany
| | - Elsa Sanchez-Garcia
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical Biotechnology; University of Duisburg-Essen; Universitätsstr. 2 45141 Essen
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28
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Berger N, Wollny LJB, Sokkar P, Mittal S, Mieres-Perez J, Stoll R, Sander W, Sanchez-Garcia E. Solvent-Enhanced Conformational Flexibility of Cyclic Tetrapeptides. Chemphyschem 2019. [DOI: 10.1002/cphc.201900597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nadja Berger
- Organische Chemie II; Ruhr-University of Bochum; Universitätsstr. 150 44780 Bochum Germany
| | - Laura J. B. Wollny
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Pandian Sokkar
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical Biotechnology; University of Duisburg-Essen; Universitätsstr. 2 45141 Essen
| | - Sumit Mittal
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical Biotechnology; University of Duisburg-Essen; Universitätsstr. 2 45141 Essen
| | - Joel Mieres-Perez
- Computational Biochemistry, Center of Medical Biotechnology; University of Duisburg-Essen; Universitätsstr. 2 45141 Essen
| | - Raphael Stoll
- Biomolecular NMR Spectroscopy; Ruhr-University of Bochum; Universitätsstr. 150 44780 Bochum Germany
| | - Wolfram Sander
- Organische Chemie II; Ruhr-University of Bochum; Universitätsstr. 150 44780 Bochum Germany
| | - Elsa Sanchez-Garcia
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical Biotechnology; University of Duisburg-Essen; Universitätsstr. 2 45141 Essen
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29
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Berger N, Wollny LJB, Sokkar P, Mittal S, Mieres‐Perez J, Stoll R, Sander W, Sanchez‐Garcia E. Solvent‐Enhanced Conformational Flexibility of Cyclic Tetrapeptides. Chemphyschem 2019; 20:1664-1670. [DOI: 10.1002/cphc.201900345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Nadja Berger
- Organische Chemie IIRuhr-University of Bochum Universitätsstr. 150 44780 Bochum Germany
| | - Laura J. B. Wollny
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Pandian Sokkar
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical BiotechnologyUniversity of Duisburg-Essen Universitätsstr. 2 45141 Essen
| | - Sumit Mittal
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical BiotechnologyUniversity of Duisburg-Essen Universitätsstr. 2 45141 Essen
| | - Joel Mieres‐Perez
- Computational Biochemistry, Center of Medical BiotechnologyUniversity of Duisburg-Essen Universitätsstr. 2 45141 Essen
| | - Raphael Stoll
- Biomolecular NMR SpectroscopyRuhr-University of Bochum Universitätsstr. 150 44780 Bochum Germany
| | - Wolfram Sander
- Organische Chemie IIRuhr-University of Bochum Universitätsstr. 150 44780 Bochum Germany
| | - Elsa Sanchez‐Garcia
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Computational Biochemistry, Center of Medical BiotechnologyUniversity of Duisburg-Essen Universitätsstr. 2 45141 Essen
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30
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Abstract
Various neutral, mono- and dicationic halogen bond donors were screened for their ability to act as catalysts in a Nazarov cyclisation reaction.
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Affiliation(s)
- Alexander Dreger
- Department of Chemistry and Biochemistry
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
| | - Patrick Wonner
- Department of Chemistry and Biochemistry
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
| | - Elric Engelage
- Department of Chemistry and Biochemistry
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
| | - Sebastian M. Walter
- Department of Chemistry and Biochemistry
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
| | - Raphael Stoll
- Department of Chemistry and Biochemistry
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
| | - Stefan M. Huber
- Department of Chemistry and Biochemistry
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
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31
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Al-Harthy TS, Shongwe MS, Husband J, Stoll R, Merz K, Abdel-Jalil RJ. Spectroscopic characterization, crystallographic elucidation and DFT investigation of 5-fluoro-6-(4-methylpiperazin-1-yl)benzo[d]thiazol-2-amine. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.08.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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32
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Stieler L, Hunger B, Rudolf M, Kreuzfeld S, Stoll R, Seibt R. Cardiovascular strain, sleep quality and work-life balance in German shift workers. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky212.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- L Stieler
- Institute for Preventive Medicine of the Rostock University Medical Center, Rostock, Germany
| | - B Hunger
- Government Safety Organization Foods and Restaurants, German Social Accident Insurance Institution for the Foodstuffs and Catering Industry, Potsdam, Germany
| | - M Rudolf
- Department of Psychology, Technical University Dresden, Dresden, Germany
| | - S Kreuzfeld
- Institute for Preventive Medicine of the Rostock University Medical Center, Rostock, Germany
| | - R Stoll
- Institute for Preventive Medicine of the Rostock University Medical Center, Rostock, Germany
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33
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Zhong X, Arnolds O, Krenczyk O, Gajewski J, Pütz S, Herrmann C, Stoll R. The Structure in Solution of Fibronectin Type III Domain 14 Reveals Its Synergistic Heparin Binding Site. Biochemistry 2018; 57:6045-6049. [PMID: 30260627 DOI: 10.1021/acs.biochem.8b00771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fibronectin is a large multidomain protein of the extracellular matrix that harbors two heparin binding sites, Hep-I and Hep-II, which support the heparin-dependent adhesion of melanoma and neuroblastoma cells [Barkalow, F. J. B., and Schwarzbauer, J. E. (1991) J. Biol. Chem. 266, 7812-7818; McCarthy, J. B., et al. (1988) Biochemistry 27, 1380-1388; Drake, S. L., et al. (1993) J. Biol. Chem. 268, 15859-15867]. The stronger heparin/HS binding site on fibronectin, Hep-II, spans fibronectin type III domains 12-14. Previous site-directed mutagenesis, nuclear magnetic resonance (NMR) chemical shift perturbation, and crystallographic structural studies all agree that the main heparin binding site is located on the surface of fibronectin type III domain 13 [Ingham, K. C., et al. (1993) Biochemistry 32, 12548-12553; Sharma, A., et al. (1999) EMBO J. 18, 1468-1479; Sachchidanand, L. O., et al. (2002) J. Biol. Chem. 277, 50629-50635]. However, the "synergy site" for heparin binding located on fibronectin type III domain 14 remained elusive because the actual binding sites could not be identified. Using NMR spectroscopy and isothermal titration calorimetry, we show here that heparin is able to bind to a cationic 'cradle' of fibronectin type III domain 14 formed by the PRARI sequence, which is involved in the integrin α4β1 interaction [Mould, A. P., and Humphries, M. J. (1991) EMBO J. 10, 4089-4095], and to the flexible loop comprising residues KNNQKSE between the last two β-strands, D and E, of FN14. Our data reveal that the individual FN14 domain binds to the sulfated sugars Dp8 and Reviparin with affinities similar to those of the individual domain FN13 [Breddin, H. K. (2002) Expert Opin. Pharmacother. 3, 173-182]. It is noteworthy that by introduction of the last β-strand of FN13 and the linker region between FN type III domains 13 and 14, the perturbation of NMR chemical shifts by heparin is significantly reduced, especially at the PRARI site. This indicates that the Hep-II binding site of fibronectin is mainly located on FN13 and the synergistic binding site on FN14 involves only the KNNQKSE sequence.
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Affiliation(s)
- Xueyin Zhong
- Ruhr-University of Bochum , Faculty of Chemistry and Biochemistry, Biomolecular NMR , Bochum 44780 , Germany
| | - Oliver Arnolds
- Ruhr-University of Bochum , Faculty of Chemistry and Biochemistry, Biomolecular NMR , Bochum 44780 , Germany
| | - Oktavian Krenczyk
- Ruhr-University of Bochum , Faculty of Chemistry and Biochemistry, Physical Chemistry I , Bochum 44780 , Germany
| | - Jana Gajewski
- Ruhr-University of Bochum , Faculty of Chemistry and Biochemistry, Biomolecular NMR , Bochum 44780 , Germany
| | - Stefanie Pütz
- Ruhr-University of Bochum , Faculty of Chemistry and Biochemistry, Biomolecular NMR , Bochum 44780 , Germany
| | - Christian Herrmann
- Ruhr-University of Bochum , Faculty of Chemistry and Biochemistry, Physical Chemistry I , Bochum 44780 , Germany
| | - Raphael Stoll
- Ruhr-University of Bochum , Faculty of Chemistry and Biochemistry, Biomolecular NMR , Bochum 44780 , Germany
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34
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Kock G, Dicks M, Yip KT, Kohl B, Pütz S, Heumann R, Erdmann KS, Stoll R. Molecular Basis of Class III Ligand Recognition by PDZ3 in Murine Protein Tyrosine Phosphatase PTPN13. J Mol Biol 2018; 430:4275-4292. [PMID: 30189200 DOI: 10.1016/j.jmb.2018.08.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/31/2018] [Accepted: 08/23/2018] [Indexed: 12/26/2022]
Abstract
Protein tyrosine phosphatase PTPN13, also known as PTP-BL in mice, represents a large multi-domain non-transmembrane scaffolding protein that contains five consecutive PDZ domains. Here, we report the solution structures of the extended murine PTPN13 PDZ3 domain in its apo form and in complex with its physiological ligand, the carboxy-terminus of protein kinase C-related kinase-2 (PRK2), determined by multidimensional NMR spectroscopy. Both in its ligand-free state and when complexed to PRK2, PDZ3 of PTPN13 adopts the classical compact, globular D/E fold. PDZ3 of PTPN13 binds five carboxy-terminal amino acids of PRK2 via a groove located between the EB-strand and the DB-helix. The PRK2 peptide resides in the canonical PDZ3 binding cleft in an elongated manner and the amino acid side chains in position P0 and P-2, cysteine and aspartate, of the ligand face the groove between EB-strand and DB-helix, whereas the PRK2 side chains of tryptophan and alanine located in position P-1 and P-3 point away from the binding cleft. These structures are rare examples of selective class III ligand recognition by a PDZ domain and now provide a basis for the detailed structural investigation of the promiscuous interaction between the PDZ domains of PTPN13 and their ligands. They will also lead to a better understanding of the proposed scaffolding function of these domains in multi-protein complexes assembled by PTPN13 and could ultimately contribute to low molecular weight antagonists that might even act on the PRK2 signaling pathway to modulate rearrangements of the actin cytoskeleton.
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Affiliation(s)
- Gerd Kock
- Biomolecular NMR Spectroscopy, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, D-44780, Germany
| | - Markus Dicks
- Biomolecular NMR Spectroscopy, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, D-44780, Germany
| | - King Tuo Yip
- Biomolecular NMR Spectroscopy, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, D-44780, Germany
| | - Bastian Kohl
- Biomolecular NMR Spectroscopy, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, D-44780, Germany
| | - Stefanie Pütz
- Biomolecular NMR Spectroscopy, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, D-44780, Germany
| | - Rolf Heumann
- Molecular Neurobiochemistry, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, D-44780, Germany
| | - Kai S Erdmann
- Department of Biomedical Science, University of Sheffield, Sheffield, S10 2TN, United Kingdom
| | - Raphael Stoll
- Biomolecular NMR Spectroscopy, Faculty of Chemistry and Biochemistry, Ruhr-University of Bochum, D-44780, Germany.
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Seibt R, Kreuzfeld S, Stoll R, Scheuch K. Physischer Gesundheitsstatus und Gesundheitsverhalten von Lehrkräften unterschiedlicher Schularten. Das Gesundheitswesen 2018. [DOI: 10.1055/s-0038-1667654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- R Seibt
- Universitätsmedizin Rostock (UMR), Institut für Präventivmedizin (IPM), Rostock, Deutschland
- Universität Rostock, Center for Life Science Automation (CELISCA), Rostock, Deutschland
| | - S Kreuzfeld
- Universitätsmedizin Rostock (UMR), Institut für Präventivmedizin (IPM), Rostock, Deutschland
| | - R Stoll
- Universitätsmedizin Rostock (UMR), Institut für Präventivmedizin (IPM), Rostock, Deutschland
| | - K Scheuch
- Zentrum für Arbeit und Gesundheit Sachsen GmbH (ZAGS GmbH), Dresden, Deutschland
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36
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Stieler L, Hunger B, Rudolf M, Stoll R, Seibt R. 24-Stunden-Monitoring von Blutdruck und Herzfrequenz an einem Arbeitstag und einem arbeitsfreien Tag bei Schichtarbeit. Das Gesundheitswesen 2018. [DOI: 10.1055/s-0038-1667695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- L Stieler
- Institut für Präventivmedizin, Universitätsmedizin Rostock, Rostock, Deutschland
| | - B Hunger
- Berufsgenossenschaft Nahrungsmittel und Gaststätten ASD*BGN Potsdam, Potsdam, Deutschland
| | - M Rudolf
- Technische Universität Dresden, Fachrichtung Psychologie, Dresden, Deutschland
| | - R Stoll
- Institut für Präventivmedizin, Universitätsmedizin Rostock, Rostock, Deutschland
| | - R Seibt
- Institut für Präventivmedizin, Universitätsmedizin Rostock, Rostock, Deutschland
- Universität Rostock, Center for Life Science Automation (CELISCA), Rostock, Deutschland
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Gienapp C, Thurow K, Stoll R. Fitnesstracker – ein moderner Ansatz zur Steigerung der körperlichen Aktivität über die Kontrolle der Herzschlagfrequenz am Handgelenk? Das Gesundheitswesen 2018. [DOI: 10.1055/s-0038-1667628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- C Gienapp
- Universitätsmedizin Rostock, Institut für Präventivmedizin, Rostock, Deutschland
- Universität Rostock, Center for Life Science Automation, Rostock, Deutschland
| | - K Thurow
- Universität Rostock, Center for Life Science Automation, Rostock, Deutschland
| | - R Stoll
- Universitätsmedizin Rostock, Institut für Präventivmedizin, Rostock, Deutschland
- Universität Rostock, Center for Life Science Automation, Rostock, Deutschland
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Lipiński PFJ, Garnuszek P, Maurin M, Stoll R, Metzler-Nolte N, Wodyński A, Dobrowolski JC, Dudek MK, Orzełowska M, Mikołajczak R. Structural studies on radiopharmaceutical DOTA-minigastrin analogue (CP04) complexes and their interaction with CCK2 receptor. EJNMMI Res 2018; 8:33. [PMID: 29663167 PMCID: PMC5902437 DOI: 10.1186/s13550-018-0387-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 04/06/2018] [Indexed: 12/16/2022] Open
Abstract
Background The cholecystokinin receptor subtype 2 (CCK-2R) is an important target for diagnostic imaging and targeted radionuclide therapy (TRNT) due to its overexpression in certain cancers (e.g., medullary thyroid carcinoma (MTC)), thus matching with a theranostic principle. Several peptide conjugates suitable for the TRNT of MTC have been synthesized, including a very promising minigastrin analogue DOTA-(DGlu)6-Ala-Tyr-Gly-Trp-Met-Asp-Phe-NH2 (CP04). In this contribution, we wanted to see whether CP04 binding affinity for CCK-2R is sensitive to the type of the complexed radiometal, as well as to get insights into the structure of CP04-CCK2R complex by molecular modeling. Results In vitro studies demonstrated that there is no significant difference in CCK-2R binding affinity and specific cellular uptake between the CP04 conjugates complexed with [68Ga]Ga3+ or [177Lu]Lu3+. In order to investigate the background of this observation, we proposed a binding model of CP04 with CCK-2R based on homology modeling and molecular docking. In this model, the C-terminal part of the molecule enters the cavity formed between the receptor helices, while the N-terminus (including DOTA and the metal) is located at the binding site outlet, exposed in large extent to the solvent. The radiometals do not influence the conformation of the molecule except for the direct neighborhood of the chelating moiety. Conclusions The model seems to be in agreement with much of structure-activity relationship (SAR) studies reported for cholecystokinin and for CCK-2R-targeting radiopharmaceuticals. It also explains relative insensitivity of CCK-2R affinity for the change of the metal. The proposed model partially fits the reported site-directed mutagenesis data.
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Affiliation(s)
- Piotr F J Lipiński
- Neuropeptides Department, Mossakowski Medical Research Centre Polish Academy of Sciences, Pawińskiego 5 Str., 02-106, Warszawa, Poland.
| | - Piotr Garnuszek
- Radioisotope Centre POLATOM, National Centre for Nuclear Research, A. Sołtana 7 Str, 05-400, Otwock, Poland
| | - Michał Maurin
- Radioisotope Centre POLATOM, National Centre for Nuclear Research, A. Sołtana 7 Str, 05-400, Otwock, Poland
| | - Raphael Stoll
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Nils Metzler-Nolte
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Artur Wodyński
- Świerk Computing Centre, National Centre for Nuclear Research, A. Sołtana 7 Str., 05-400, Otwock, Poland.,Institut für Chemie, Theoretische Chemie/Quantenchemie, Technische Universität Berlin, Sekr. C7, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Jan Cz Dobrowolski
- Institute of Nuclear Chemistry and Technology, Dorodna 16 Street, 03-195, Warszawa, Poland.,National Medicines Institute, Chełmska 30/34 Str., 00-725, Warszawa, Poland
| | - Marta K Dudek
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland
| | - Monika Orzełowska
- Radioisotope Centre POLATOM, National Centre for Nuclear Research, A. Sołtana 7 Str, 05-400, Otwock, Poland
| | - Renata Mikołajczak
- Radioisotope Centre POLATOM, National Centre for Nuclear Research, A. Sołtana 7 Str, 05-400, Otwock, Poland
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Schöpel M, Shkura O, Seidel J, Kock K, Zhong X, Löffek S, Helfrich I, Bachmann HS, Scherkenbeck J, Herrmann C, Stoll R. Allosteric Activation of GDP-Bound Ras Isoforms by Bisphenol Derivative Plasticisers. Int J Mol Sci 2018; 19:ijms19041133. [PMID: 29642594 PMCID: PMC5979466 DOI: 10.3390/ijms19041133] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 01/13/2023] Open
Abstract
The protein family of small GTPases controls cellular processes by acting as a binary switch between an active and an inactive state. The most prominent family members are H-Ras, N-Ras, and K-Ras isoforms, which are highly related and frequently mutated in cancer. Bisphenols are widespread in modern life because of their industrial application as plasticisers. Bisphenol A (BPA) is the best-known member and has gained significant scientific as well as public attention as an endocrine disrupting chemical, a fact that eventually led to its replacement. However, compounds used to replace BPA still contain the molecular scaffold of bisphenols. BPA, BPAF, BPB, BPE, BPF, and an amine-substituted BPAF-derivate all interact with all GDP-bound Ras-Isoforms through binding to a common site on these proteins. NMR-, SOScat-, and GDI- assay-based data revealed a new bisphenol-induced, allosterically activated GDP-bound Ras conformation that define these plasticisers as Ras allosteric agonists.
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Affiliation(s)
- Miriam Schöpel
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, D-44780 Bochum, Germany.
| | - Oleksandr Shkura
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, D-44780 Bochum, Germany.
| | - Jana Seidel
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, D-44780 Bochum, Germany.
| | - Klaus Kock
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, D-44780 Bochum, Germany.
| | - Xueyin Zhong
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, D-44780 Bochum, Germany.
| | - Stefanie Löffek
- Skin Cancer Unit of the Dermatology Department, West German Cancer Center, University Hospital Essen, University Duisburg-Essen and the German Cancer Consortium (DKTK), D-45147 Essen, Germany.
| | - Iris Helfrich
- Skin Cancer Unit of the Dermatology Department, West German Cancer Center, University Hospital Essen, University Duisburg-Essen and the German Cancer Consortium (DKTK), D-45147 Essen, Germany.
| | - Hagen S Bachmann
- Institute of Pharmacology and Toxicology, Witten/Herdecke University, Stockumer Str. 10, D-58453 Witten, Germany.
| | - Jürgen Scherkenbeck
- Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaußstr. 20, D-42119 Wuppertal, Germany.
| | - Christian Herrmann
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, D-44780 Bochum, Germany.
| | - Raphael Stoll
- Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätsstr. 150, D-44780 Bochum, Germany.
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40
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Al-Harthy T, Zoghaib WM, Stoll R, Abdel-Jalil R. Design, synthesis, and antimicrobial evaluation of novel 2-arylbenzothiazole analogs bearing fluorine and piperazine moieties. Monatsh Chem 2018. [DOI: 10.1007/s00706-017-2088-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Uhlig D, Spange S, Seifert A, Nagel K, Anders S, Kroll L, Stoll R, Thielbeer F, Müller P, Schreiter K. Design of nanostructured hybrid materials: twin polymerization of urethane-based twin prepolymers. RSC Adv 2018; 8:31673-31681. [PMID: 35548201 PMCID: PMC9085902 DOI: 10.1039/c8ra05310c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/04/2018] [Indexed: 11/30/2022] Open
Abstract
Organic–inorganic hybrid materials with urethane functionalities were obtained by simultaneous twin polymerization of twin prepolymers in combination with the ideal twin monomer 2,2′-spirobi[4H-1,3,2-benzodioxasiline]. The twin prepolymers consist of a urethane-based prepolymer with reactive terminal groups which can react during the twin polymerization process. Nanostructured hybrid materials with integrated dialkylsiloxane crosslinked urethane structures, phenolic resin and SiO2 are obtained in a one pot process. The effects of the polymerization temperature as well as those of various catalysts and reagent ratios on the polymerization behavior were investigated. The molecular structures of the obtained materials were determined by 13C- and 29Si-{1H}-CP-MAS NMR spectroscopies. HAADF-STEM-measurements were performed to prove the distribution of silicon in the hybrid material. Organic–inorganic hybrid materials with urethane functionalities were obtained by simultaneous twin polymerization of twin prepolymers in combination with the twin monomer 2,2′-spirobi[4H-1,3,2-benzodioxasiline].![]()
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Affiliation(s)
- D. Uhlig
- Department of Polymer Chemistry
- Chemnitz University of Technology
- Faculty of Natural Science
- D-09107 Chemnitz
- Germany
| | - S. Spange
- Department of Polymer Chemistry
- Chemnitz University of Technology
- Faculty of Natural Science
- D-09107 Chemnitz
- Germany
| | - A. Seifert
- Department of Polymer Chemistry
- Chemnitz University of Technology
- Faculty of Natural Science
- D-09107 Chemnitz
- Germany
| | - K. Nagel
- Department of Polymer Chemistry
- Chemnitz University of Technology
- Faculty of Natural Science
- D-09107 Chemnitz
- Germany
| | - S. Anders
- Department of Lightweight Structures and Polymer Technology
- Chemnitz University of Technology
- Faculty of Mechanical Engineering
- D-09107 Chemnitz
- Germany
| | - L. Kroll
- Department of Lightweight Structures and Polymer Technology
- Chemnitz University of Technology
- Faculty of Mechanical Engineering
- D-09107 Chemnitz
- Germany
| | | | | | | | - K. Schreiter
- Department of Polymer Chemistry
- Chemnitz University of Technology
- Faculty of Natural Science
- D-09107 Chemnitz
- Germany
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42
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Stieler L, Hunger B, Kreuzfeld S, Stoll R, Seibt R. Kardiovaskuläres Erholungsverhalten bei Schicht- und Tagarbeitern im Hotel- und Gastgewerbe (HuG) – eine 24h-Untersuchung. Das Gesundheitswesen 2017. [DOI: 10.1055/s-0037-1605681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- L Stieler
- Universitätsmedizin Rostock Institut für Präventivmedizin (IPM), Rostock
| | - B Hunger
- Berufsgenossenschaft Nahrungsmittel und Gaststätten ASD*BGN, Potsdam
| | - S Kreuzfeld
- Universitätsmedizin Rostock Institut für Präventivmedizin (IPM), Rostock
| | - R Stoll
- Universitätsmedizin Rostock Institut für Präventivmedizin (IPM), Rostock
| | - R Seibt
- Universitätsmedizin Rostock Institut für Präventivmedizin (IPM), Rostock
- Universität Rostock, Center for Life Science Automation (CELISCA), Rostock
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43
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Seibt R, Möller D, Kreuzfeld S, Stoll R, Hunger B. Auswirkungen der 12-Stunden-Schichtarbeit auf Gesundheit, Schlaf und Work-Life-Balance von Maschinen- und Anlagenführern im Längsschnitt. Das Gesundheitswesen 2017. [DOI: 10.1055/s-0037-1605898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- R Seibt
- Universitätsmedizin Rostock, Institut für Präventivmedizin, Rostock
- Universität Rostock, Center for Life Science Automation (CELISCA), Rostock
| | - D Möller
- THUMEDI-Präventionsmanagement GmbH, Thum-Jahnsbach
| | - S Kreuzfeld
- Universitätsmedizin Rostock, Institut für Präventivmedizin, Rostock
| | - R Stoll
- Universitätsmedizin Rostock, Institut für Präventivmedizin, Rostock
| | - B Hunger
- Berufsgenossenschaft Nahrungsmittel und Gastgewerbe, ASD*BGN, Koordinationsstelle Potsdam, Potsdam
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44
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Potheraveedu VN, Schöpel M, Stoll R, Heumann R. Rheb in neuronal degeneration, regeneration, and connectivity. Biol Chem 2017; 398:589-606. [PMID: 28212107 DOI: 10.1515/hsz-2016-0312] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Accepted: 02/02/2017] [Indexed: 01/31/2023]
Abstract
The small GTPase Rheb was originally detected as an immediate early response protein whose expression was induced by NMDA-dependent synaptic activity in the brain. Rheb's activity is highly regulated by its GTPase activating protein (GAP), the tuberous sclerosis complex protein, which stimulates the conversion from the active, GTP-loaded into the inactive, GDP-loaded conformation. Rheb has been established as an evolutionarily conserved molecular switch protein regulating cellular growth, cell volume, cell cycle, autophagy, and amino acid uptake. The subcellular localization of Rheb and its interacting proteins critically regulate its activity and function. In stem cells, constitutive activation of Rheb enhances differentiation at the expense of self-renewal partially explaining the adverse effects of deregulated Rheb in the mammalian brain. In the context of various cellular stress conditions such as oxidative stress, ER-stress, death factor signaling, and cellular aging, Rheb activation surprisingly enhances rather than prevents cellular degeneration. This review addresses cell type- and cell state-specific function(s) of Rheb and mainly focuses on neurons and their surrounding glial cells. Mechanisms will be discussed in the context of therapy that interferes with Rheb's activity using the antibiotic rapamycin or low molecular weight compounds.
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Affiliation(s)
- Veena Nambiar Potheraveedu
- Molecular Neurobiochemistry, Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätstr. 150, D-44780 Bochum
| | - Miriam Schöpel
- Biomolecular NMR, Ruhr University of Bochum, D-44780 Bochum
| | - Raphael Stoll
- Biomolecular NMR, Ruhr University of Bochum, D-44780 Bochum
| | - Rolf Heumann
- Molecular Neurobiochemistry, Faculty of Chemistry and Biochemistry, Ruhr University of Bochum, Universitätstr. 150, D-44780 Bochum
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45
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Arnolds O, Zhong X, Tuo Yip K, Schöpel M, Kohl B, Pütz S, Abdel-Jalil R, Stoll R. NMR-based Drug Development and Improvement Against Malignant Melanoma - Implications for the MIA Protein Family. Curr Med Chem 2017; 24:1788-1796. [PMID: 28595551 DOI: 10.2174/0929867324666170608104347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 04/21/2017] [Accepted: 05/05/2017] [Indexed: 11/22/2022]
Abstract
The Melanoma Inhibitory Activity (MIA) protein is strongly expressed and secreted by malignant melanoma cells and was shown to promote melanoma development and invasion. The MIA protein was the first extracellular protein shown to adopt an Src homology 3 (SH3) domain-like fold in solution that can bind to fibronectin type III domains. Together with MIA, the homologous proteins OTOR (or FDP), MIA-2, and TANGO (or MIA-3) constitute a protein family of non-cytosolic and - except for fulllength TANGO and TANGO1-like (TALI) - extracellular SH3-domain containing proteins. Members of this protein family modulate collagen maturation and export, cartilage development, cell attachment in the extracellular matrix, and melanoma metastasis. These proteins may thus serve as promising targets for drug development against malignant melanoma. For the last twenty years, NMR spectroscopy has become a powerful technique in medicinal chemistry. While traditional high throughput screenings only report on the activity or affinity of low molecular weight compounds, NMR spectroscopy does not only relate to the structure of those compounds with their activity, but it can also unravel structural information on the ligand binding site on the protein at atomic resolution. Based on the molecular details of the interaction between the ligand and its target protein, the binding affinities of initial fragment hits can be further improved more efficiently in order to generate lead structures that exhibit significant therapeutic effects. The NMR-based approach promises to greatly contribute to the quest for low molecular weight compounds that ultimately could yield drugs to treat skin-related diseases such as malignant melanoma more effectively.
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Affiliation(s)
- Oliver Arnolds
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Xueyin Zhong
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - King Tuo Yip
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Miriam Schöpel
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Bastian Kohl
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Stefanie Pütz
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Raid Abdel-Jalil
- Chemistry Department, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Raphael Stoll
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
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Yip KT, Zhong X, Seibel N, Arnolds O, Schöpel M, Stoll R. Human melanoma inhibitory protein binds to the FN12-14 Hep II domain of fibronectin. Biointerphases 2017; 12:02D415. [PMID: 28565914 PMCID: PMC5451317 DOI: 10.1116/1.4984008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/03/2017] [Accepted: 05/10/2017] [Indexed: 11/17/2022] Open
Abstract
The heparin binding site (Hep II) of fibronectin plays a major role in tumor cell metastasis. Its interaction with heparan sulfate proteoglycans occurs in a variety of physiological processes including focal adhesion and migration. The melanoma inhibitory activity (MIA) is an important protein that is functionally involved in melanoma development, progression, and tumor cell invasion. After its secretion by malignant melanoma cells, MIA interacts with fibronectin and thereby actively facilitates focal cell detachment from surrounding structures and strongly promotes tumor cell invasion and the formation of metastases. In this report, the authors have determined the molecular basis of the interaction of MIA with the Hep II domain of fibronectin based on nuclear magnetic resonance spectroscopic binding assays. The authors have identified the type III modules 12 to 14 of fibronectin's Hep II as the major MIA binding sites. These results now provide a new target protein-protein binding interface for the discovery of novel antimetastatic agents against malignant melanoma in the future.
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Affiliation(s)
- King Tuo Yip
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Xueyin Zhong
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Nadia Seibel
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Oliver Arnolds
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Miriam Schöpel
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
| | - Raphael Stoll
- Biomolecular NMR, Ruhr University of Bochum, 44780 Bochum, Germany
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Schöpel M, Potheraveedu VN, Al-Harthy T, Abdel-Jalil R, Heumann R, Stoll R. The small GTPases Ras and Rheb studied by multidimensional NMR spectroscopy: structure and function. Biol Chem 2017; 398:577-588. [DOI: 10.1515/hsz-2016-0276] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 01/23/2017] [Indexed: 12/15/2022]
Abstract
Abstract
Ras GTPases are key players in cellular signalling because they act as binary switches. These states manifest through toggling between an active (GTP-loaded) and an inactive (GDP-loaded) form. The hydrolysis and replenishing of GTP is controlled by two additional protein classes: GAP (GTPase-activating)- and GEF (Guanine nucleotide exchange factors)-proteins. The complex interplay of the proteins is known as the GTPase-cycle. Several point mutations of the Ras protein deregulate this cycle. Mutations in Ras are associated with up to one-third of human cancers. The three isoforms of Ras (H, N, K) exhibit high sequence similarity and mainly differ in a region called HVR (hypervariable region). The HVR governs the differential action and cellular distribution of the three isoforms. Rheb is a Ras-like GTPase that is conserved from yeast to mammals. Rheb is mainly involved in activation of cell growth through stimulation of mTORC1 activity. In this review, we summarise multidimensional NMR studies on Rheb and Ras carried out to characterise their structure-function relationship and explain how the activity of these small GTPases can be modulated by low molecular weight compounds. These might help to design GTPase-selective antagonists for treatment of cancer and brain disease.
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Al-Harthy T, Zoghaib WM, Pflüger M, Schöpel M, Önder K, Reitsammer M, Hundsberger H, Stoll R, Abdel-Jalil R. Design, Synthesis, and Cytotoxicity of 5-Fluoro-2-methyl-6-(4-aryl-piperazin-1-yl) Benzoxazoles. Molecules 2016; 21:molecules21101290. [PMID: 27689973 PMCID: PMC6274350 DOI: 10.3390/molecules21101290] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 09/21/2016] [Accepted: 09/22/2016] [Indexed: 11/20/2022] Open
Abstract
To design new compounds suitable as starting points for anticancer drug development, we have synthesized a novel series of benzoxazoles with pharmaceutically advantageous piperazine and fluorine moieties attached to them. The newly synthesized benzoxazoles and their corresponding precursors were evaluated for cytotoxicity on human A-549 lung carcinoma cells and non-cancer HepaRG hepatocyes. Some of these new benzoxazoles show potential anticancer activity, while two of the intermediates show lung cancer selective properties at low concentrations where healthy cells are unaffected, indicating a selectivity window for anticancer compounds.
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Affiliation(s)
- Thuraya Al-Harthy
- Chemistry Department, College of Science, Sultan Qaboos University, Muscat 123, Oman.
| | - Wajdi Michel Zoghaib
- Chemistry Department, College of Science, Sultan Qaboos University, Muscat 123, Oman.
| | - Maren Pflüger
- IMC Fachhochschule Krems University of Applied Sciences Krems, Piaristengasse 1, Krems A-3500, Austria.
| | - Miriam Schöpel
- Biomolecular NMR, Ruhr University of Bochum, Bochum 44780, Germany.
| | - Kamil Önder
- Research Program for Rational Drug Design in Dermatology and Rheumatolog, Department of Dermatology, General Hospital of Salzburg, Paracelsus Medical, University of Salzburg, Müllner Hauptstraße 48, Salzburg A-5020, Austria.
| | - Maria Reitsammer
- Research Program for Rational Drug Design in Dermatology and Rheumatolog, Department of Dermatology, General Hospital of Salzburg, Paracelsus Medical, University of Salzburg, Müllner Hauptstraße 48, Salzburg A-5020, Austria.
| | - Harald Hundsberger
- IMC Fachhochschule Krems University of Applied Sciences Krems, Piaristengasse 1, Krems A-3500, Austria.
| | - Raphael Stoll
- Biomolecular NMR, Ruhr University of Bochum, Bochum 44780, Germany.
| | - Raid Abdel-Jalil
- Chemistry Department, College of Science, Sultan Qaboos University, Muscat 123, Oman.
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Strack M, Bedini A, Yip KT, Lombardi S, Siegmund D, Stoll R, Spampinato SM, Metzler-Nolte N. A Blocking Group Scan Using a Spherical Organometallic Complex Identifies an Unprecedented Binding Mode with Potent Activity In Vitro and In Vivo for the Opioid Peptide Dermorphin. Chemistry 2016; 22:14605-10. [PMID: 27553294 DOI: 10.1002/chem.201602432] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Indexed: 01/12/2023]
Abstract
Herein, the selective enforcement of one particular receptor-ligand interaction between specific domains of the μ-selective opioid peptide dermorphin and the μ opioid receptor is presented. For this, a blocking group scan is described which exploits the steric demand of a bis(quinolinylmethyl)amine rhenium(I) tricarbonyl complex conjugated to a number of different, strategically chosen positions of dermorphin. The prepared peptide conjugates lead to the discovery of two different binding modes: An expected N-terminal binding mode corresponds to the established view of opioid peptide binding, whereas an unexpected C-terminal binding mode is newly discovered. Surprisingly, both binding modes provide high affinity and agonistic activity at the μ opioid receptor in vitro. Furthermore, the unprecedented C-terminal binding mode shows potent dose-dependent antinociception in vivo. Finally, in silico docking studies support receptor activation by both dermorphin binding modes and suggest a biological relevance for dermorphin itself. Relevant ligand-protein interactions are similar for both binding modes, which is in line with previous protein mutation studies.
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Affiliation(s)
- Martin Strack
- Chair of Inorganic Chemistry I, Bioinorganic Chemistry, Ruhr University Bochum, Universitaetsstrasse 150, 44801, Bochum, Germany
| | - Andrea Bedini
- Department of Pharmacy and Biochemistry, University of Bologna, Via Irnerio 48, Bologna, Italy
| | - King T Yip
- Biomolecular NMR, Ruhr University Bochum, Universitaetsstrasse 150, 44801, Bochum, Germany
| | - Sara Lombardi
- Department of Pharmacy and Biochemistry, University of Bologna, Via Irnerio 48, Bologna, Italy
| | - Daniel Siegmund
- Chair of Inorganic Chemistry I, Bioinorganic Chemistry, Ruhr University Bochum, Universitaetsstrasse 150, 44801, Bochum, Germany
| | - Raphael Stoll
- Biomolecular NMR, Ruhr University Bochum, Universitaetsstrasse 150, 44801, Bochum, Germany
| | - Santi M Spampinato
- Department of Pharmacy and Biochemistry, University of Bologna, Via Irnerio 48, Bologna, Italy
| | - Nils Metzler-Nolte
- Chair of Inorganic Chemistry I, Bioinorganic Chemistry, Ruhr University Bochum, Universitaetsstrasse 150, 44801, Bochum, Germany.
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50
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Veit S, Nagadoi A, Rögner M, Rexroth S, Stoll R, Ikegami T. The cyanobacterial cytochrome b6f subunit PetP adopts an SH3 fold in solution. Biochimica et Biophysica Acta (BBA) - Bioenergetics 2016; 1857:705-14. [DOI: 10.1016/j.bbabio.2016.03.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/02/2016] [Accepted: 03/23/2016] [Indexed: 12/22/2022]
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