1
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Strizhak AV, Babii O, Afonin S, Bakanovich I, Pantelejevs T, Xu W, Fowler E, Eapen R, Sharma K, Platonov MO, Hurmach VV, Itzhaki L, Hyvönen M, Ulrich AS, Spring DR, Komarov IV. Diarylethene moiety as an enthalpy-entropy switch: photoisomerizable stapled peptides for modulating p53/MDM2 interaction. Org Biomol Chem 2021; 18:5359-5369. [PMID: 32390036 DOI: 10.1039/d0ob00831a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Analogs of the known inhibitor (peptide pDI) of the p53/MDM2 protein-protein interaction are reported, which are stapled by linkers bearing a photoisomerizable diarylethene moiety. The corresponding photoisomers possess significantly different affinities to the p53-interacting domain of the human MDM2. Apparent dissociation constants are in the picomolar-to-low nanomolar range for those isomers with diarylethene in the "open" configuration, but up to eight times larger for the corresponding "closed" isomers. Spectroscopic, structural, and computational studies showed that the stapling linkers of the peptides contribute to their binding. Calorimetry revealed that the binding of the "closed" isomers is mostly enthalpy-driven, whereas the "open" photoforms bind to the protein stronger due to their increased binding entropy. The results suggest that conformational dynamics of the protein-peptide complexes may explain the differences in the thermodynamic profiles of the binding.
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Affiliation(s)
- Alexander V Strizhak
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK. and Enamine Ltd, Vul. Chervonotkatska 78, 02094 Kyiv, Ukraine
| | - Oleg Babii
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), POB 3640, 76021 Karlsruhe, Germany.
| | - Sergii Afonin
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), POB 3640, 76021 Karlsruhe, Germany.
| | - Iuliia Bakanovich
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK. and Enamine Ltd, Vul. Chervonotkatska 78, 02094 Kyiv, Ukraine
| | - Teodors Pantelejevs
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, CB2 1GA Cambridge, UK
| | - Wenshu Xu
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
| | - Elaine Fowler
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
| | - Rohan Eapen
- Department of Pharmacology, University of Cambridge, Tennis Court Road, CB2 1PD Cambridge, UK
| | - Krishna Sharma
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
| | | | - Vasyl V Hurmach
- Enamine Ltd, Vul. Chervonotkatska 78, 02094 Kyiv, Ukraine and Taras Shevchenko National University of Kyiv, Vul. Volodymyrska 60, 01601 Kyiv, Ukraine
| | - Laura Itzhaki
- Department of Pharmacology, University of Cambridge, Tennis Court Road, CB2 1PD Cambridge, UK
| | - Marko Hyvönen
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, CB2 1GA Cambridge, UK
| | - Anne S Ulrich
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), POB 3640, 76021 Karlsruhe, Germany. and Institute of Organic Chemistry (IOC), KIT, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - David R Spring
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
| | - Igor V Komarov
- Taras Shevchenko National University of Kyiv, Vul. Volodymyrska 60, 01601 Kyiv, Ukraine and Lumobiotics GmbH, Auer Str. 2, 76227, Karlsruhe, Germany.
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2
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Afonin S, Koniev S, Préau L, Takamiya M, Strizhak AV, Babii O, Hrebonkin A, Pivovarenko VG, Dathe M, le Noble F, Rastegar S, Strähle U, Ulrich AS, Komarov IV. In Vivo Behavior of the Antibacterial Peptide Cyclo[RRRWFW], Explored Using a 3-Hydroxychromone-Derived Fluorescent Amino Acid. Front Chem 2021; 9:688446. [PMID: 34262894 PMCID: PMC8273159 DOI: 10.3389/fchem.2021.688446] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 03/30/2021] [Accepted: 06/11/2021] [Indexed: 11/20/2022] Open
Abstract
Labeling biomolecules with fluorescent labels is an established tool for structural, biochemical, and biophysical studies; however, it remains underused for small peptides. In this work, an amino acid bearing a 3-hydroxychromone fluorophore, 2-amino-3-(2-(furan-2-yl)-3-hydroxy-4-oxo-4H-chromen-6-yl)propanoic acid (FHC), was incorporated in a known hexameric antimicrobial peptide, cyclo[RRRWFW] (cWFW), in place of aromatic residues. Circular dichroism spectropolarimetry and antibacterial activity measurements demonstrated that the FHC residue perturbs the peptide structure depending on labeling position but does not modify the activity of cWFW significantly. FHC thus can be considered an adequate label for studies of the parent peptide. Several analytical and imaging techniques were used to establish the activity of the obtained labeled cWFW analogues toward animal cells and to study the behavior of the peptides in a multicellular organism. The 3-hydroxychromone fluorophore can undergo excited-state intramolecular proton transfer (ESIPT), resulting in double-band emission from its two tautomeric forms. This feature allowed us to get insights into conformational equilibria of the labeled peptides, localize the cWFW analogues in human cells (HeLa and HEK293) and zebrafish embryos, and assess the polarity of the local environment around the label by confocal fluorescence microscopy. We found that the labeled peptides efficiently penetrated cancerous cells and localized mainly in lipid-containing and/or other nonpolar subcellular compartments. In the zebrafish embryo, the peptides remained in the bloodstream upon injection into the cardinal vein, presumably adhering to lipoproteins and/or microvesicles. They did not diffuse into any tissue to a significant extent during the first 3 h after administration. This study demonstrated the utility of fluorescent labeling by double-emission labels to evaluate biologically active peptides as potential drug candidates in vivo.
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Affiliation(s)
- Sergii Afonin
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Serhii Koniev
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
- Enamine, Kyiv, Ukraine
| | - Laetitia Préau
- Institute of Zoology (ZOO), Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Masanari Takamiya
- Institute of Biological and Chemical Systems, Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Alexander V. Strizhak
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
- Enamine, Kyiv, Ukraine
| | - Oleg Babii
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Andrii Hrebonkin
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology, Karlsruhe, Germany
| | | | - Margitta Dathe
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie, (FMP), Berlin, Germany
| | - Ferdinand le Noble
- Institute of Zoology (ZOO), Karlsruhe Institute of Technology, Karlsruhe, Germany
- Institute of Biological and Chemical Systems, Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Sepand Rastegar
- Institute of Biological and Chemical Systems, Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Uwe Strähle
- Institute of Biological and Chemical Systems, Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Anne S. Ulrich
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Igor V. Komarov
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
- Enamine, Kyiv, Ukraine
- Lumobiotics, Karlsruhe, Germany
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3
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Shaydyuk Y, Bashmakova NV, Dmytruk AM, Kachkovsky OD, Koniev S, Strizhak AV, Komarov IV, Belfield KD, Bondar MV, Babii O. Nature of Fast Relaxation Processes and Spectroscopy of a Membrane-Active Peptide Modified with Fluorescent Amino Acid Exhibiting Excited State Intramolecular Proton Transfer and Efficient Stimulated Emission. ACS Omega 2021; 6:10119-10128. [PMID: 34056166 PMCID: PMC8153670 DOI: 10.1021/acsomega.1c00193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
A fluorescently labeled peptide that exhibited fast excited state intramolecular proton transfer (ESIPT) was synthesized, and the nature of its electronic properties was comprehensively investigated, including linear photophysical and photochemical characterization, specific relaxation processes in the excited state, and its stimulated emission ability. The steady-state absorption, fluorescence, and excitation anisotropy spectra, along with fluorescence lifetimes and emission quantum yields, were obtained in liquid media and analyzed based on density functional theory quantum-chemical calculations. The nature of ESIPT processes of the peptide's chromophore moiety was explored using a femtosecond transient absorption pump-probe technique, revealing relatively fast ESIPT velocity (∼10 ps) in protic MeOH at room temperature. Efficient superluminescence properties of the peptide were realized upon femtosecond excitation in the main long-wavelength absorption band with a corresponding threshold of the pump pulse energy of ∼1.5 μJ. Quantum-chemical analysis of the electronic structure of the peptide was performed using the density functional theory/time-dependent density functional theory level of theory, affording good agreement with experimental data.
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Affiliation(s)
- Yevgeniy
O. Shaydyuk
- Institute
of Physics National Academy of Sciences of Ukraine, Prospect Nauki 46, Kyiv 03028, Ukraine
| | - Nataliia V. Bashmakova
- Taras
Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Andriy M. Dmytruk
- Institute
of Physics National Academy of Sciences of Ukraine, Prospect Nauki 46, Kyiv 03028, Ukraine
| | - Olexiy D. Kachkovsky
- V.P.
Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the
National Academy of Sciences, Murmanskaya Street 1, Kyiv 02660, Ukraine
| | - Serhii Koniev
- Taras
Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | | | - Igor V. Komarov
- Taras
Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Kevin D. Belfield
- New
Jersey Institute of Technology, College of Science and Liberal Arts, University Heights, Newark, New Jersey 07102, United States
| | - Mykhailo V. Bondar
- Institute
of Physics National Academy of Sciences of Ukraine, Prospect Nauki 46, Kyiv 03028, Ukraine
| | - Oleg Babii
- Institute
of Biological Interfaces (IBG-2), Karlsruhe
Institute of Technology (KIT), POB3640, Karlsruhe 76021, Germany
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4
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Sharma K, Strizhak AV, Fowler E, Xu W, Chappell B, Sore HF, Galloway WRJD, Grayson MN, Lau YH, Itzhaki LS, Spring DR. Functionalized Double Strain-Promoted Stapled Peptides for Inhibiting the p53-MDM2 Interaction. ACS Omega 2020; 5:1157-1169. [PMID: 31984273 PMCID: PMC6977200 DOI: 10.1021/acsomega.9b03459] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 12/24/2019] [Indexed: 06/10/2023]
Abstract
The Sondheimer dialkyne reagent has previously been employed in strain-promoted double-click cycloadditions with bis-azide peptides to generate stapled peptide inhibitors of protein-protein interactions. The substituted variants of the Sondheimer dialkyne can be used to generate functionalized stapled peptide inhibitors with improved biological properties; however, this remains a relatively underdeveloped field. Herein, we report the synthesis of new substituted variants of Sondheimer dialkyne and their application in the stapling of p53-based diazido peptides to generate potent stapled peptide-based inhibitors of the oncogenic p53-MDM2 interaction. The functionalized stapled peptide formed from a meta-fluoro-substituted Sondheimer dialkyne was found to be the most potent inhibitor. Furthermore, through experimental studies and density functional theory calculations, we investigated the impact of the substituent on the strain-promoted double-click reactivity of Sondheimer dialkyne.
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Affiliation(s)
- Krishna Sharma
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Alexander V. Strizhak
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Elaine Fowler
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Wenshu Xu
- Department
of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1PD, U.K.
| | - Ben Chappell
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Hannah F. Sore
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | | | - Matthew N. Grayson
- Department
of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K.
| | - Yu Heng Lau
- School
of Chemistry, The University of Sydney, Eastern Avenue, Sydney, New South Wales 2006, Australia
| | - Laura S. Itzhaki
- Department
of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1PD, U.K.
| | - David R. Spring
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
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5
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Sharma K, Strizhak AV, Fowler E, Wang X, Xu W, Hatt Jensen C, Wu Y, Sore HF, Lau YH, Hyvönen M, Itzhaki LS, Spring DR. Water-soluble, stable and azide-reactive strained dialkynes for biocompatible double strain-promoted click chemistry. Org Biomol Chem 2020; 17:8014-8018. [PMID: 31418442 DOI: 10.1039/c9ob01745c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The Sondheimer dialkyne is extensively used in double strain-promoted azide-alkyne cycloadditions. This reagent suffers with poor water-solubility and rapidly decomposes in aqueous solutions. This intrinsically limits its application in biological systems, and no effective solutions are currently available. Herein, we report the development of novel highly water-soluble, stable, and azide-reactive strained dialkyne reagents. To demonstrate their extensive utility, we applied our novel dialkynes to a double strain-promoted macrocyclisation strategy to generate functionalised p53-based stapled peptides for inhibiting the oncogenic p53-MDM2 interaction. These functionalised stapled peptides bind MDM2 with low nanomolar affinity and show p53 activation in a cellular environment. Overall, our highly soluble, stable and azide-reactive dialkynes offer significant advantages over the currently used Sondheimer dialkyne, and could be utilised for numerous biological applications.
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Affiliation(s)
- Krishna Sharma
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
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6
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Budnyak TM, Gładysz-Płaska A, Strizhak AV, Sternik D, Komarov IV, Majdan M, Tertykh VA. Imidazole-2yl-Phosphonic Acid Derivative Grafted onto Mesoporous Silica Surface as a Novel Highly Effective Sorbent for Uranium(VI) Ion Extraction. ACS Appl Mater Interfaces 2018; 10:6681-6693. [PMID: 29370513 DOI: 10.1021/acsami.7b17594] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new imidazol-2yl-phosphonic acid/mesoporous silica sorbent (ImP(O)(OH)2/SiO2) was developed and applied for uranium(VI) ion removal from aqueous solutions. The synthesized material was characterized by fast kinetics and an extra-high adsorption capacity with respect to uranium. The highest adsorption efficiency of U(VI) ions was obtained for the reaction system at pH 4 and exceeded 618 mg/g. The uranium(VI) sorption proceeds quickly in the first step within 60 min of the adsorbent sites and ion interactions. Moreover, the equilibrium time was determined to be 120 min. The equilibrium and kinetic characteristics of the uranium(VI) ions uptake by synthesized sorbent was found to follow the Langmuir-Freundlich isotherm model and pseudo-second-order kinetics rather than the Langmuir, Dubinin-Radushkevich, and Temkin models and pseudo-first-order or intraparticle diffusion sorption kinetics. The adsorption mechanism for uranium on the sorbent was clarified basing on the X-ray photoelectron spectroscopy (XPS) analysis. The model of UO22+ binding to surface of the sorbent was proposed according to the results of XPS, i.e., a 1:1 U-to-P ratio in the sorbed complex was established. The regeneration study confirms the ImP(O)(OH)2/SiO2 sorbent can be reused. A total of 45% of uranium ions was determined as originating from the sorbent leaching in the acidic solutions, whereas when the basic solutions were used, the removal efficiency was 12%.
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Affiliation(s)
- Tetyana M Budnyak
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine , 17 General Naumov Street, 03164 Kyiv, Ukraine
- KTH Royal Institute of Technology , Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | | | - Alexander V Strizhak
- Taras Shevchenko National University of Kyiv , 64/13 Volodymyrska Street, 01601 Kyiv, Ukraine
| | - Dariusz Sternik
- Maria Curie Skłodowska University , 2 Marie Curie Skłodowska Square, 20-031 Lublin, Poland
| | - Igor V Komarov
- Taras Shevchenko National University of Kyiv , 64/13 Volodymyrska Street, 01601 Kyiv, Ukraine
| | - Marek Majdan
- Maria Curie Skłodowska University , 2 Marie Curie Skłodowska Square, 20-031 Lublin, Poland
| | - Valentin A Tertykh
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine , 17 General Naumov Street, 03164 Kyiv, Ukraine
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7
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Strizhak AV, Sharma K, Babii O, Afonin S, Ulrich AS, Komarov IV, Spring DR. Highly reactive bis-cyclooctyne-modified diarylethene for SPAAC-mediated cross-linking. Org Biomol Chem 2018; 16:8559-8564. [DOI: 10.1039/c8ob02428f] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoisomerizable diarylethenes equipped with triple bonds are promising building blocks for constructing bistable photocontrollable systems.
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Affiliation(s)
| | - Krishna Sharma
- University Chemical Laboratory
- University of Cambridge
- CB2 1EW Cambridge
- UK
| | - Oleg Babii
- Institute of Biological Interfaces (IBG-2)
- Karlsruhe Institute of Technology (KIT)
- 76021 Karlsruhe
- Germany
| | - Sergii Afonin
- Institute of Biological Interfaces (IBG-2)
- Karlsruhe Institute of Technology (KIT)
- 76021 Karlsruhe
- Germany
| | - Anne S. Ulrich
- Institute of Biological Interfaces (IBG-2)
- Karlsruhe Institute of Technology (KIT)
- 76021 Karlsruhe
- Germany
- Institute of Organic Chemistry (IOC)
| | - Igor V. Komarov
- Taras Shevchenko National University of Kyiv
- Institute of High Technologies
- 01601 Kyiv
- Ukraine
- Lumobiotics GmbH
| | - David R. Spring
- University Chemical Laboratory
- University of Cambridge
- CB2 1EW Cambridge
- UK
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8
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Kokhan SO, Tymtsunik AV, Grage SL, Afonin S, Babii O, Berditsch M, Strizhak AV, Bandak D, Platonov MO, Komarov IV, Ulrich AS, Mykhailiuk PK. Design, Synthesis, and Application of an Optimized Monofluorinated Aliphatic Label for Peptide Studies by Solid-State 19
F NMR Spectroscopy. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608116] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [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)
- Serhii O. Kokhan
- Enamine Ltd; Chervonotkatska 78 02094 Kyiv Ukraine
- Institute of High Technologies; Taras Shevchenko National University of Kyiv; Volodymyrska 60 01601 Kyiv Ukraine
| | - Andriy V. Tymtsunik
- Enamine Ltd; Chervonotkatska 78 02094 Kyiv Ukraine
- Institute of High Technologies; Taras Shevchenko National University of Kyiv; Volodymyrska 60 01601 Kyiv Ukraine
| | - Stephan L. Grage
- Institute of Biological Interfaces (IBG-2); Karlsruhe Institute of Technology (KIT); POB 3640 76021 Karlsruhe Germany
| | - Sergii Afonin
- Institute of Biological Interfaces (IBG-2); Karlsruhe Institute of Technology (KIT); POB 3640 76021 Karlsruhe Germany
| | - Oleg Babii
- Institute of Organic Chemistry (IOC); KIT; Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Marina Berditsch
- Institute of Organic Chemistry (IOC); KIT; Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | | | | | | | - Igor V. Komarov
- Institute of High Technologies; Taras Shevchenko National University of Kyiv; Volodymyrska 60 01601 Kyiv Ukraine
| | - Anne S. Ulrich
- Institute of Biological Interfaces (IBG-2); Karlsruhe Institute of Technology (KIT); POB 3640 76021 Karlsruhe Germany
- Institute of Organic Chemistry (IOC); KIT; Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Pavel K. Mykhailiuk
- Enamine Ltd; Chervonotkatska 78 02094 Kyiv Ukraine
- Chemistry Department; Taras Shevchenko National University of Kyiv; Volodymyrska 64 01601 Kyiv Ukraine
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9
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Kokhan SO, Tymtsunik AV, Grage SL, Afonin S, Babii O, Berditsch M, Strizhak AV, Bandak D, Platonov MO, Komarov IV, Ulrich AS, Mykhailiuk PK. Design, Synthesis, and Application of an Optimized Monofluorinated Aliphatic Label for Peptide Studies by Solid‐State
19
F NMR Spectroscopy. Angew Chem Int Ed Engl 2016; 55:14788-14792. [DOI: 10.1002/anie.201608116] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Serhii O. Kokhan
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine
- Institute of High Technologies Taras Shevchenko National University of Kyiv Volodymyrska 60 01601 Kyiv Ukraine
| | - Andriy V. Tymtsunik
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine
- Institute of High Technologies Taras Shevchenko National University of Kyiv Volodymyrska 60 01601 Kyiv Ukraine
| | - Stephan L. Grage
- Institute of Biological Interfaces (IBG-2) Karlsruhe Institute of Technology (KIT) POB 3640 76021 Karlsruhe Germany
| | - Sergii Afonin
- Institute of Biological Interfaces (IBG-2) Karlsruhe Institute of Technology (KIT) POB 3640 76021 Karlsruhe Germany
| | - Oleg Babii
- Institute of Organic Chemistry (IOC) KIT Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Marina Berditsch
- Institute of Organic Chemistry (IOC) KIT Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | | | | | | | - Igor V. Komarov
- Institute of High Technologies Taras Shevchenko National University of Kyiv Volodymyrska 60 01601 Kyiv Ukraine
| | - Anne S. Ulrich
- Institute of Biological Interfaces (IBG-2) Karlsruhe Institute of Technology (KIT) POB 3640 76021 Karlsruhe Germany
- Institute of Organic Chemistry (IOC) KIT Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Pavel K. Mykhailiuk
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine
- Chemistry Department Taras Shevchenko National University of Kyiv Volodymyrska 64 01601 Kyiv Ukraine
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10
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Budnyak TM, Strizhak AV, Gładysz-Płaska A, Sternik D, Komarov IV, Kołodyńska D, Majdan M, Tertykh VА. Silica with immobilized phosphinic acid-derivative for uranium extraction. J Hazard Mater 2016; 314:326-340. [PMID: 27177215 DOI: 10.1016/j.jhazmat.2016.04.056] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 04/20/2016] [Accepted: 04/21/2016] [Indexed: 05/26/2023]
Abstract
A novel adsorbent benzoimidazol-2-yl-phenylphosphinic acid/aminosilica adsorbent (BImPhP(O)(OH)/SiO2NH2) was prepared by carbonyldiimidazole-mediated coupling of aminosilica with 1-carboxymethylbenzoimidazol-2-yl-phenylphosphinic acid. It was obtained through direct phosphorylation of 1-cyanomethylbenzoimidazole by phenylphosphonic dichloride followed by basic hydrolysis of the nitrile. The obtained sorbent was well characterized by physicochemical methods, such as differential scanning calorimetry-mass spectrometry (DSC-MS), surface area and pore distribution analysis (ASAP), scanning electron microscopy (SEM), X-ray photoelectron (XPS) and Fourier transform infrared (FTIR) spectroscopies. The adsorption behavior of the sorbent and initial silica gel as well as aminosilica gel with respect to uranium(VI) from the aqueous media has been studied under varying operating conditions of pH, concentration of uranium(VI), contact time, and desorption in different media. The synthesized material was found to show an increase in adsorption activity with respect to uranyl ions in comparison with the initial compounds. In particular, the highest adsorption capacity for the obtained modified silica was found at the neutral pH, where one gram of the adsorbent can extract 176mg of uranium. Under the same conditions the aminosilica extracts 166mg/g, and the silica - 144mg/g of uranium. In the acidic medium, which is common for uranium nuclear wastes, the synthesized adsorbent extracts 27mg/g, the aminosilica - 16mg/g, and the silica - 14mg/g of uranium. It was found that 15% of uranium ions leached from the prepared material in acidic solutions, while 4% of uranium can be removed in a phosphate solution.
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Affiliation(s)
- Tetyana M Budnyak
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17 General Naumov Str., 03164 Kyiv, Ukraine.
| | - Alexander V Strizhak
- Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601 Kyiv, Ukraine
| | | | - Dariusz Sternik
- Maria Curie Skłodowska University, 2 M. Curie Skłodowska Sq., 20-031 Lublin, Poland
| | - Igor V Komarov
- Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601 Kyiv, Ukraine
| | - Dorota Kołodyńska
- Maria Curie Skłodowska University, 2 M. Curie Skłodowska Sq., 20-031 Lublin, Poland
| | - Marek Majdan
- Maria Curie Skłodowska University, 2 M. Curie Skłodowska Sq., 20-031 Lublin, Poland
| | - Valentin А Tertykh
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17 General Naumov Str., 03164 Kyiv, Ukraine
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