1
|
Carlson DA, Singer MR, Sutherland C, Redondo C, Alexander LT, Hughes PF, Knapp S, Gurley SB, Sparks MA, MacDonald JA, Haystead TAJ. Targeting Pim Kinases and DAPK3 to Control Hypertension. Cell Chem Biol 2018; 25:1195-1207.e32. [PMID: 30033129 PMCID: PMC6863095 DOI: 10.1016/j.chembiol.2018.06.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 03/16/2018] [Accepted: 06/20/2018] [Indexed: 01/19/2023]
Abstract
Sustained vascular smooth muscle hypercontractility promotes hypertension and cardiovascular disease. The etiology of hypercontractility is not completely understood. New therapeutic targets remain vitally important for drug discovery. Here we report that Pim kinases, in combination with DAPK3, regulate contractility and control hypertension. Using a co-crystal structure of lead molecule (HS38) in complex with DAPK3, a dual Pim/DAPK3 inhibitor (HS56) and selective DAPK3 inhibitors (HS94 and HS148) were developed to provide mechanistic insight into the polypharmacology of hypertension. In vitro and ex vivo studies indicated that Pim kinases directly phosphorylate smooth muscle targets and that Pim/DAPK3 inhibition, unlike selective DAPK3 inhibition, significantly reduces contractility. In vivo, HS56 decreased blood pressure in spontaneously hypertensive mice in a dose-dependent manner without affecting heart rate. These findings suggest including Pim kinase inhibition within a multi-target engagement strategy for hypertension management. HS56 represents a significant step in the development of molecularly targeted antihypertensive medications.
Collapse
Affiliation(s)
- David A Carlson
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Miriam R Singer
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Cindy Sutherland
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6, Canada
| | - Clara Redondo
- Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK
| | - Leila T Alexander
- Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK
| | - Philip F Hughes
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Stefan Knapp
- Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK; Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany
| | - Susan B Gurley
- Division of Nephrology, Department of Medicine, Duke University and Durham VA Medical Centers, Durham, NC 27710, USA
| | - Matthew A Sparks
- Division of Nephrology, Department of Medicine, Duke University and Durham VA Medical Centers, Durham, NC 27710, USA
| | - Justin A MacDonald
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6, Canada
| | - Timothy A J Haystead
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA.
| |
Collapse
|
2
|
Litvinov A, Feintuch A, Un S, Goldfarb D. Triple resonance EPR spectroscopy determines the Mn 2+ coordination to ATP. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2018; 294:143-152. [PMID: 30053753 PMCID: PMC6230374 DOI: 10.1016/j.jmr.2018.07.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 06/18/2018] [Accepted: 07/12/2018] [Indexed: 06/08/2023]
Abstract
Mn2+ often serves as a paramagnetic substitute to Mg2+, providing means for exploring the close environment of Mg2+ in many biological systems where it serves as an essential co-factor. This applies to proteins with ATPase activity, where the ATP hydrolysis requires the binding of Mg2+-ATP to the ATPase active site. In this context, it is important to distinguish between the Mn2+ coordination mode with free ATP in solution as compared to the protein bound case. In this work, we explore the Mn2+ complexes with ATP, the non-hydrolysable ATP analog, AMPPNP, and ADP free in solution. Using W-band 31P electron-nuclear double resonance (ENDOR) we obtained information about the coordination to the phosphates, whereas from electron-electron double resonance (ELDOR) - detected NMR (EDNMR) we determined the coordination to an adenosine nitrogen. The coordination to these ligands has been reported earlier, but whether the nitrogen and phosphate coordination is within the same nucleotide molecules or different ones is still under debate. By applying the correlation technique, THYCOS (triple hyperfine correlation spectroscopy), and measuring 15N-31P correlations we establish that in Mn-ATP in solution both phosphates and a nitrogen are coordinated to the Mn2+ ion. We also carried out DFT calculations to substantiate this finding. In addition, we expanded the understanding of the THYCOS experiment by comparing it to 2D-EDNMR for 55Mn-31P correlation experiments and through simulations of THYCOS and 2D-EDNMR spectra with 15N-31P correlations.
Collapse
Affiliation(s)
- Aleksei Litvinov
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Israel
| | - Akiva Feintuch
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Israel
| | - Sun Un
- Department of Biochemistry, Biophysics and Structural Biology, Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS UMR 9198, CEA-Saclay, Gif-sur-Yvette F-91198, France
| | - Daniella Goldfarb
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Israel.
| |
Collapse
|
3
|
Singh P, Ravanan P, Talwar P. Death Associated Protein Kinase 1 (DAPK1): A Regulator of Apoptosis and Autophagy. Front Mol Neurosci 2016; 9:46. [PMID: 27445685 PMCID: PMC4917528 DOI: 10.3389/fnmol.2016.00046] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 05/30/2016] [Indexed: 11/13/2022] Open
Abstract
Death-Associated Protein Kinase 1 (DAPK1) belongs to a family of five serine/threonine (Ser/Thr) kinases that possess tumor suppressive function and also mediate a wide range of cellular processes, including apoptosis and autophagy. The loss and gain-of–function of DAPK1 is associated with various cancer and neurodegenerative diseases respectively. In recent years, mechanistic studies have broadened our knowledge of the molecular mechanisms involved in DAPK1-mediated autophagy/apoptosis. In the present review, we have discussed the structural information and various cellular functions of DAPK1 in a comprehensive manner.
Collapse
Affiliation(s)
- Pratibha Singh
- Apoptosis and Cell Survival Research Laboratory, Department of Bio-Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT) University Vellore, Tamil Nadu, India
| | - Palaniyandi Ravanan
- Apoptosis and Cell Survival Research Laboratory, Department of Bio-Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT) University Vellore, Tamil Nadu, India
| | - Priti Talwar
- Apoptosis and Cell Survival Research Laboratory, Department of Bio-Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT) University Vellore, Tamil Nadu, India
| |
Collapse
|
4
|
Guedes IA, Freitas RHCN, Cordeiro NM, Nascimento TSD, Valerio TS, Fernandes PD, Dardenne LE, Fraga CAM. LASSBio-1829 Hydrochloride: Development of a New Orally ActiveN-Acylhydrazone IKK2 Inhibitor with Anti-inflammatory Properties. ChemMedChem 2015; 11:234-44. [DOI: 10.1002/cmdc.201500266] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/05/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Isabella A. Guedes
- Laboratório Nacional de Computação Científica (LNCC/MCTI); Petrópolis RJ Brazil
| | - Rosana H. C. N. Freitas
- Laboratório de Avaliação e Substâncias Bioativas (LASSBio); Instituto de Ciências Biomédicas (ICB); Universidade Federal do Rio de Janeiro (UFRJ); 21941-902 Rio de Janeiro RJ Brazil
| | - Natália M. Cordeiro
- Laboratório de Farmacologia da Dor e da Inflamação; ICB; UFRJ; Rio de Janeiro RJ Brazil
| | | | - Tayna S. Valerio
- Laboratório de Farmacologia da Dor e da Inflamação; ICB; UFRJ; Rio de Janeiro RJ Brazil
| | - Patrícia D. Fernandes
- Laboratório de Farmacologia da Dor e da Inflamação; ICB; UFRJ; Rio de Janeiro RJ Brazil
| | - Laurent E. Dardenne
- Laboratório Nacional de Computação Científica (LNCC/MCTI); Petrópolis RJ Brazil
| | - Carlos A. M. Fraga
- Laboratório de Avaliação e Substâncias Bioativas (LASSBio); Instituto de Ciências Biomédicas (ICB); Universidade Federal do Rio de Janeiro (UFRJ); 21941-902 Rio de Janeiro RJ Brazil
| |
Collapse
|
5
|
Benderska N, Ivanovska J, Rau TT, Schulze-Luehrmann J, Mohan S, Chakilam S, Gandesiri M, Ziesché E, Fischer T, Söder S, Agaimy A, Distel L, Sticht H, Mahadevan V, Schneider-Stock R. DAPK-HSF1 interaction as a positive-feedback mechanism stimulating TNF-induced apoptosis in colorectal cancer cells. J Cell Sci 2014; 127:5273-87. [PMID: 25380824 DOI: 10.1242/jcs.157024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Death-associated protein kinase (DAPK) is a serine-threonine kinase with tumor suppressor function. Previously, we demonstrated that tumor necrosis factor (TNF) induced DAPK-mediated apoptosis in colorectal cancer. However, the protein-protein interaction network associated with TNF-DAPK signaling still remains unclear. We identified HSF1 as a new DAPK phosphorylation target in response to low concentrations of TNF and verified a physical interaction between DAPK and HSF1 both in vitro and in vivo. We show that HSF1 binds to the DAPK promoter. Transient overexpression of HSF1 protein led to an increase in DAPK mRNA level and consequently to an increase in the amount of apoptosis. By contrast, treatment with a DAPK-specific inhibitor as well as DAPK knockdown abolished the phosphorylation of HSF1 at Ser230 (pHSF1(Ser230)). Furthermore, translational studies demonstrated a positive correlation between DAPK and pHSF1(Ser230) protein expression in human colorectal carcinoma tissues. Taken together, our data define a novel link between DAPK and HSF1 and highlight a positive-feedback loop in DAPK regulation under mild inflammatory stress conditions in colorectal tumors. For the first time, we show that under TNF the pro-survival HSF1 protein can be redirected to a pro-apoptotic program.
Collapse
Affiliation(s)
- Natalya Benderska
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | - Jelena Ivanovska
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | - Tilman T Rau
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | - Jan Schulze-Luehrmann
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | - Suma Mohan
- Faculty of School of Chemical & Biotechnology of the SASTRA University, Thanjavur 613401, India
| | - Saritha Chakilam
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | - Muktheshwar Gandesiri
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | | | - Thomas Fischer
- Center of Internal Medicine, Clinic of Hematology/Oncology, Otto-von-Guericke University Magdeburg, 39106 Magdeburg, Germany
| | - Stephan Söder
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | - Abbas Agaimy
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | - Luitpold Distel
- Department of Radiation Oncology, University Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Heinrich Sticht
- Institute of Biochemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| | - Vijayalakshmi Mahadevan
- Faculty of School of Chemical & Biotechnology of the SASTRA University, Thanjavur 613401, India
| | - Regine Schneider-Stock
- Department of Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen 91054, Germany
| |
Collapse
|
6
|
Abstract
![]()
Although ADP release is the rate
limiting step in product turnover
by protein kinase A, the steps and motions involved in this process
are not well resolved. Here we report the apo and ADP bound structures
of the myristylated catalytic subunit of PKA at 2.9 and 3.5 Å
resolution, respectively. The ADP bound structure adopts a conformation
that does not conform to the previously characterized open, closed,
or intermediate states. In the ADP bound structure, the C-terminal
tail and Gly-rich loop are more closed than in the open state adopted
in the apo structure but are also much more open than the intermediate
or closed conformations. Furthermore, ADP binds at the active site
with only one magnesium ion, termed Mg2 from previous structures.
These structures thus support a model where ADP release proceeds through
release of the substrate and Mg1 followed by lifting of the Gly-rich
loop and disengagement of the C-terminal tail. Coupling of these two
structural elements with the release of the first metal ion fills
in a key step in the catalytic cycle that has been missing and supports
an ensemble of correlated conformational states that mediate the full
catalytic cycle for a protein kinase.
Collapse
Affiliation(s)
- Adam C Bastidas
- Department of Pharmacology, University of California, San Diego , San Diego, California 92093, United States
| | | | | |
Collapse
|
7
|
Watterson DM, Grum-Tokars VL, Roy SM, Schavocky JP, Bradaric BD, Bachstetter AD, Xing B, Dimayuga E, Saeed F, Zhang H, Staniszewski A, Pelletier JC, Minasov G, Anderson WF, Arancio O, Van Eldik LJ. Development of Novel In Vivo Chemical Probes to Address CNS Protein Kinase Involvement in Synaptic Dysfunction. PLoS One 2013; 8:e66226. [PMID: 23840427 PMCID: PMC3694096 DOI: 10.1371/journal.pone.0066226] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 05/02/2013] [Indexed: 12/23/2022] Open
Abstract
Serine-threonine protein kinases are critical to CNS function, yet there is a dearth of highly selective, CNS-active kinase inhibitors for in vivo investigations. Further, prevailing assumptions raise concerns about whether single kinase inhibitors can show in vivo efficacy for CNS pathologies, and debates over viable approaches to the development of safe and efficacious kinase inhibitors are unsettled. It is critical, therefore, that these scientific challenges be addressed in order to test hypotheses about protein kinases in neuropathology progression and the potential for in vivo modulation of their catalytic activity. Identification of molecular targets whose in vivo modulation can attenuate synaptic dysfunction would provide a foundation for future disease-modifying therapeutic development as well as insight into cellular mechanisms. Clinical and preclinical studies suggest a critical link between synaptic dysfunction in neurodegenerative disorders and the activation of p38αMAPK mediated signaling cascades. Activation in both neurons and glia also offers the unusual potential to generate enhanced responses through targeting a single kinase in two distinct cell types involved in pathology progression. However, target validation has been limited by lack of highly selective inhibitors amenable to in vivo use in the CNS. Therefore, we employed high-resolution co-crystallography and pharmacoinformatics to design and develop a novel synthetic, active site targeted, CNS-active, p38αMAPK inhibitor (MW108). Selectivity was demonstrated by large-scale kinome screens, functional GPCR agonist and antagonist analyses of off-target potential, and evaluation of cellular target engagement. In vitro and in vivo assays demonstrated that MW108 ameliorates beta-amyloid induced synaptic and cognitive dysfunction. A serendipitous discovery during co-crystallographic analyses revised prevailing models about active site targeting of inhibitors, providing insights that will facilitate future kinase inhibitor design. Overall, our studies deliver highly selective in vivo probes appropriate for CNS investigations and demonstrate that modulation of p38αMAPK activity can attenuate synaptic dysfunction.
Collapse
Affiliation(s)
- D. Martin Watterson
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, United States of America
- * E-mail:
| | - Valerie L. Grum-Tokars
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, United States of America
| | - Saktimayee M. Roy
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, United States of America
| | - James P. Schavocky
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, United States of America
| | - Brinda Desai Bradaric
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, United States of America
| | - Adam D. Bachstetter
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Bin Xing
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Edgardo Dimayuga
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Faisal Saeed
- Department of Pathology and Cell Biology, Columbia University, New York, New York, United States of America
| | - Hong Zhang
- Department of Pathology and Cell Biology, Columbia University, New York, New York, United States of America
| | - Agnieszka Staniszewski
- Department of Pathology and Cell Biology, Columbia University, New York, New York, United States of America
| | - Jeffrey C. Pelletier
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, United States of America
| | - George Minasov
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, United States of America
| | - Wayne F. Anderson
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, United States of America
| | - Ottavio Arancio
- Department of Pathology and Cell Biology, Columbia University, New York, New York, United States of America
| | - Linda J. Van Eldik
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| |
Collapse
|
8
|
Moffat LD, Brown SBA, Grassie ME, Ulke-Lemée A, Williamson LM, Walsh MP, MacDonald JA. Chemical genetics of zipper-interacting protein kinase reveal myosin light chain as a bona fide substrate in permeabilized arterial smooth muscle. J Biol Chem 2011; 286:36978-91. [PMID: 21880706 DOI: 10.1074/jbc.m111.257949] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Zipper-interacting protein kinase (ZIPK) has been implicated in Ca(2+)-independent smooth muscle contraction, although its specific role is unknown. The addition of ZIPK to demembranated rat caudal arterial strips induced an increase in force, which correlated with increases in LC(20) and MYPT1 phosphorylation. However, because of the number of kinases capable of phosphorylating LC(20) and MYPT1, it has proven difficult to identify the mechanism underlying ZIPK action. Therefore, we set out to identify bona fide ZIPK substrates using a chemical genetics method that takes advantage of ATP analogs with bulky substituents at the N(6) position and an engineered ZIPK capable of utilizing such substrates. (32)P-Labeled 6-phenyl-ATP and ZIPK-L93G mutant protein were added to permeabilized rat caudal arterial strips, and substrate proteins were detected by autoradiography following SDS-PAGE. Mass spectrometry identified LC(20) as a direct target of ZIPK in situ for the first time. Tissues were also exposed to 6-phenyl-ATP and ZIPK-L93G in the absence of endogenous ATP, and putative ZIPK substrates were identified by Western blotting. LC(20) was thereby confirmed as a direct target of ZIPK; however, no phosphorylation of MYPT1 was detected. We conclude that ZIPK is involved in the regulation of smooth muscle contraction through direct phosphorylation of LC(20).
Collapse
Affiliation(s)
- Lori D Moffat
- Smooth Muscle Research Group and the Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta T2N 4Z6, Canada
| | | | | | | | | | | | | |
Collapse
|
9
|
Site-directed mutagenesis of the glycine-rich loop of death associated protein kinase (DAPK) identifies it as a key structure for catalytic activity. BIOCHIMICA ET BIOPHYSICA ACTA 2011; 1813:1068-73. [PMID: 21126544 PMCID: PMC3101106 DOI: 10.1016/j.bbamcr.2010.11.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Revised: 11/16/2010] [Accepted: 11/18/2010] [Indexed: 01/07/2023]
Abstract
Death associated protein kinase (DAPK) is a calmodulin (CaM)-regulated protein kinase that is a therapeutic target for central nervous system (CNS) disorders. We report here the results of studies that test the hypothesis of McNamara et al. (2009) that conformational selection in DAPK's glycine-rich region is key for catalytic activity. The hypothesis was tested by site-directed mutagenesis of glutamine-23 (Q23) in the middle of this loop. The glycine-rich loop exhibits localized differences in structure among DAPK conformations that correlate with different stages of the catalytic cycle. Changing the Q23 to a Valine (V23), found at the corresponding position in another CaM regulated protein kinase, results in a reduced catalytic efficiency. High resolution X-ray crystal structures of various conformations of the Q23V mutant DAPK and their superimposition with the corresponding conformations from wild type catalytic domain reveal localized changes in the glycine-rich region. The effect of the mutation on DAPK catalytic activity and the finding of only localized changes in the DAPK structure provide experimental evidence implicating conformational selection in this domain with activity. This article is part of a Special Issue entitled: 11th European Symposium on Calcium.
Collapse
|
10
|
Patel AK, Yadav RP, Majava V, Kursula I, Kursula P. Structure of the dimeric autoinhibited conformation of DAPK2, a pro-apoptotic protein kinase. J Mol Biol 2011; 409:369-83. [PMID: 21497605 DOI: 10.1016/j.jmb.2011.03.065] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 03/24/2011] [Accepted: 03/28/2011] [Indexed: 11/27/2022]
Abstract
The death-associated protein kinase (DAPK) family has been characterized as a group of pro-apoptotic serine/threonine kinases that share specific structural features in their catalytic kinase domain. Two of the DAPK family members, DAPK1 and DAPK2, are calmodulin-dependent protein kinases that are regulated by oligomerization, calmodulin binding, and autophosphorylation. In this study, we have determined the crystal and solution structures of murine DAPK2 in the presence of the autoinhibitory domain, with and without bound nucleotides in the active site. The crystal structure shows dimers of DAPK2 in a conformation that is not permissible for protein substrate binding. Two different conformations were seen in the active site upon the introduction of nucleotide ligands. The monomeric and dimeric forms of DAPK2 were further analyzed for solution structure, and the results indicate that the dimers of DAPK2 are indeed formed through the association of two apposed catalytic domains, as seen in the crystal structure. The structures can be further used to build a model for DAPK2 autophosphorylation and to compare with closely related kinases, of which especially DAPK1 is an actively studied drug target. Our structures also provide a model for both homodimerization and heterodimerization of the catalytic domain between members of the DAPK family. The fingerprint of the DAPK family, the basic loop, plays a central role in the dimerization of the kinase domain.
Collapse
Affiliation(s)
- Ashok K Patel
- Department of Biochemistry, University of Oulu, Finland
| | | | | | | | | |
Collapse
|
11
|
Zimmermann M, Atmanene C, Xu Q, Fouillen L, Van Dorsselaer A, Bonnet D, Marsol C, Hibert M, Sanglier-Cianferani S, Pigault C, McNamara LK, Watterson DM, Haiech J, Kilhoffer MC. Homodimerization of the death-associated protein kinase catalytic domain: development of a new small molecule fluorescent reporter. PLoS One 2010; 5:e14120. [PMID: 21152427 PMCID: PMC2994711 DOI: 10.1371/journal.pone.0014120] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Accepted: 11/01/2010] [Indexed: 11/19/2022] Open
Abstract
Background Death-Associated Protein Kinase (DAPK) is a member of the Ca2+/calmodulin regulated serine/threonine protein kinases. Its biological function has been associated with induced cell death, and in vivo use of selective small molecule inhibitors of DAPK catalytic activity has demonstrated that it is a potential therapeutic target for treatment of brain injuries and neurodegenerative diseases. Methodology/Principal Findings In the in vitro study presented here, we describe the homodimerization of DAPK catalytic domain and the crucial role played by its basic loop structure that is part of the molecular fingerprint of death protein kinases. Nanoelectrospray ionization mass spectrometry of DAPK catalytic domain and a basic loop mutant DAPK protein performed under a variety of conditions was used to detect the monomer-dimer interchange. A chemical biological approach was used to find a fluorescent probe that allowed us to follow the oligomerization state of the protein in solution. Conclusions/Significance The use of this combined biophysical and chemical biology approach facilitated the elucidation of a monomer-dimer equilibrium in which the basic loop plays a key role, as well as an apparent allosteric conformational change reported by the fluorescent probe that is independent of the basic loop structure.
Collapse
Affiliation(s)
- Michael Zimmermann
- Laboratoire d'Innovation Thérapeutique, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France
| | - Cédric Atmanene
- Laboratoire de Spectrométrie de Masse BioOrganique, Département Sciences Analytiques, Institut Pluridisciplinaire Hubert Curien, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Qingyan Xu
- Laboratoire d'Innovation Thérapeutique, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France
- School of Science, Xiamen University, Xiamen, Fujian Province, People's Republic of China
| | - Laetitia Fouillen
- Laboratoire de Spectrométrie de Masse BioOrganique, Département Sciences Analytiques, Institut Pluridisciplinaire Hubert Curien, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Alain Van Dorsselaer
- Laboratoire de Spectrométrie de Masse BioOrganique, Département Sciences Analytiques, Institut Pluridisciplinaire Hubert Curien, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Dominique Bonnet
- Laboratoire d'Innovation Thérapeutique, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France
| | - Claire Marsol
- Laboratoire d'Innovation Thérapeutique, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France
| | - Marcel Hibert
- Laboratoire d'Innovation Thérapeutique, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France
| | - Sarah Sanglier-Cianferani
- Laboratoire de Spectrométrie de Masse BioOrganique, Département Sciences Analytiques, Institut Pluridisciplinaire Hubert Curien, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Claire Pigault
- Laboratoire d'Innovation Thérapeutique, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France
| | | | | | - Jacques Haiech
- Laboratoire d'Innovation Thérapeutique, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France
- * E-mail:
| | - Marie-Claude Kilhoffer
- Laboratoire d'Innovation Thérapeutique, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France
| |
Collapse
|
12
|
de Diego I, Kuper J, Bakalova N, Kursula P, Wilmanns M. Molecular basis of the death-associated protein kinase-calcium/calmodulin regulator complex. Sci Signal 2010; 3:ra6. [PMID: 20103772 DOI: 10.1126/scisignal.2000552] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Death-associated protein kinase (DAPK) provides a model for calcium-bound calmodulin (CaM)-dependent protein kinases (CaMKs). Here, we report the crystal structure of the binary DAPK-CaM complex, using a construct that includes the DAPK catalytic domain and adjacent autoregulatory domain. When DAPK was in a complex with CaM, the DAPK autoregulatory domain formed a long seven-turn helix. This DAPK-CaM module interacted with the DAPK catalytic domain through two separate domain-domain interfaces, which involved the upper and the lower lobe of the catalytic domain. When bound to DAPK, CaM adopted an extended conformation, which was different from that in CaM-CaMK peptide complexes. Complementary biochemical analysis showed that the ability of DAPK to bind CaM correlated with its catalytic activity. Because many features of CaM binding are conserved in other CaMKs, our findings likely provide a generally applicable model for regulation of CaMK activity.
Collapse
Affiliation(s)
- Iñaki de Diego
- European Molecular Biology Laboratory-Hamburg, Notkestrasse 85, D-22603 Hamburg, Germany
| | | | | | | | | |
Collapse
|