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Li X, Li B, Li J, Yang M, Bai Y, Chen K, Chen Z, Mao N. Mechanistic insights into the role of calcium in the allosteric regulation of the calmodulin-regulated death-associated protein kinase. Front Mol Biosci 2022; 9:1104942. [PMID: 36601586 PMCID: PMC9806222 DOI: 10.3389/fmolb.2022.1104942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Calcium (Ca2+) signaling plays an important role in the regulation of many cellular functions. Ca2+-binding protein calmodulin (CaM) serves as a primary effector of calcium function. Ca2+/CaM binds to the death-associated protein kinase 1 (DAPK1) to regulate intracellular signaling pathways. However, the mechanism underlying the influence of Ca2+ on the conformational dynamics of the DAPK1-CaM interactions is still unclear. Here, we performed large-scale molecular dynamics (MD) simulations of the DAPK1-CaM complex in the Ca2+-bound and-unbound states to reveal the importance of Ca2+. MD simulations revealed that removal of Ca2+ increased the anti-correlated inter-domain motions between DAPK1 and CaM, which weakened the DAPK1-CaM interactions. Binding free energy calculations validated the decreased DAPK1-CaM interactions in the Ca2+-unbound state. Structural analysis further revealed that Ca2+ removal caused the significant conformational changes at the DAPK1-CaM interface, especially the helices α1, α2, α4, α6, and α7 from the CaM and the basic loop and the phosphate-binding loop from the DAPK1. These results may be useful to understand the biological role of Ca2+ in physiological processes.
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Affiliation(s)
- Xiaolong Li
- Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Bo Li
- Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jun Li
- Department of Orthopedics, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Mingyuan Yang
- Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yushu Bai
- Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, China,*Correspondence: Yushu Bai, ; Kai Chen, ; Ziqiang Chen, ; Ningfang Mao,
| | - Kai Chen
- Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, China,*Correspondence: Yushu Bai, ; Kai Chen, ; Ziqiang Chen, ; Ningfang Mao,
| | - Ziqiang Chen
- Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, China,*Correspondence: Yushu Bai, ; Kai Chen, ; Ziqiang Chen, ; Ningfang Mao,
| | - Ningfang Mao
- Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, China,*Correspondence: Yushu Bai, ; Kai Chen, ; Ziqiang Chen, ; Ningfang Mao,
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蒋 文, 吴 俊, 曽 佳, 景 光, 汤 礼, 孙 红. [Role of CaMK II in pancreatic injury in mice with severe acute pancreatitis]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2022; 42:286-292. [PMID: 35365455 PMCID: PMC8983368 DOI: 10.12122/j.issn.1673-4254.2022.02.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To investigate the expression of Ca2+/calmodulin-dependent protein kinase II (CaMK Ⅱ) in pancreatic tissues of mice with severe acute pancreatitis (SAP) and explore the protective effect of KN93, a CaMK Ⅱ inhibitor, against pancreatic injury in SAP and the possible mechanism. METHODS Thirty-six healthy male C57 mice were randomly divided into sham operation group, SAP group, KN93 group and SAP + KN93 group (n=9). Serum and pancreatic tissue samples were collected 24 h after modeling. The pathological changes in the pancreatic tissues were observed using HE staining. Serum lipase and amylase activities and the levels of inflammatory factors were detected using ELISA. Western blotting was used to detect the expressions of CaMK Ⅱ, p-CaMK Ⅱ, p-NF-κB, MAPK and p-MAPK in mouse pancreas. RESULTS Compared with those in sham operation group, the expressions of p-CaMK Ⅱ, p-NF-κB and p-MAPK were significantly increased in SAP group (P < 0.05). KN93 treatment obviously alleviated pathological injuries of the pancreas in SAP mice, and significantly lowered serum levels of lipase, amylase and inflammatory factors (TNF-α and IL-6) and phosphorylation levels of NF-κB, ERK and MAPK proteins (P < 0.05). CONCLUSION The activity of CaMK Ⅱ is significantly increased in the pancreatic tissue of SAP mice. KN93 can alleviate pancreatic injury and inflammation in SAP mice possibly through the ERK/MAPK signaling pathway.
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Affiliation(s)
- 文 蒋
- 西南交通大学医学院,四川 成都 610063College of Medicine Southwest Jiaotong University, Chengdu 610063, China
- 西部战区总医院全军普通外科中心//四川省胰腺损伤与修复重点实验室,四川 成都 610083PLA Center of General Surgery, Pancreatic Injury and Repair Key Laboratory of Sichuan Province, General Hospital of Western Theater Command, Chengdu 610083, China
| | - 俊 吴
- 西南交通大学医学院,四川 成都 610063College of Medicine Southwest Jiaotong University, Chengdu 610063, China
- 西部战区总医院全军普通外科中心//四川省胰腺损伤与修复重点实验室,四川 成都 610083PLA Center of General Surgery, Pancreatic Injury and Repair Key Laboratory of Sichuan Province, General Hospital of Western Theater Command, Chengdu 610083, China
| | - 佳容 曽
- 西南交通大学医学院,四川 成都 610063College of Medicine Southwest Jiaotong University, Chengdu 610063, China
- 西部战区总医院全军普通外科中心//四川省胰腺损伤与修复重点实验室,四川 成都 610083PLA Center of General Surgery, Pancreatic Injury and Repair Key Laboratory of Sichuan Province, General Hospital of Western Theater Command, Chengdu 610083, China
| | - 光旭 景
- 西南交通大学医学院,四川 成都 610063College of Medicine Southwest Jiaotong University, Chengdu 610063, China
- 西部战区总医院全军普通外科中心//四川省胰腺损伤与修复重点实验室,四川 成都 610083PLA Center of General Surgery, Pancreatic Injury and Repair Key Laboratory of Sichuan Province, General Hospital of Western Theater Command, Chengdu 610083, China
| | - 礼军 汤
- 西南交通大学医学院,四川 成都 610063College of Medicine Southwest Jiaotong University, Chengdu 610063, China
- 西部战区总医院全军普通外科中心//四川省胰腺损伤与修复重点实验室,四川 成都 610083PLA Center of General Surgery, Pancreatic Injury and Repair Key Laboratory of Sichuan Province, General Hospital of Western Theater Command, Chengdu 610083, China
| | - 红玉 孙
- 西南交通大学医学院,四川 成都 610063College of Medicine Southwest Jiaotong University, Chengdu 610063, China
- 西部战区总医院全军普通外科中心//四川省胰腺损伤与修复重点实验室,四川 成都 610083PLA Center of General Surgery, Pancreatic Injury and Repair Key Laboratory of Sichuan Province, General Hospital of Western Theater Command, Chengdu 610083, China
- 西部战区总医院基础医学实验室,四川 成都 610083Basic Medical Laboratory, General Hospital of Western Theater Command, Chengdu 610083, China
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Huang C, Du J, Ji B, Gong S, Geng C, Miao Y, Shen Q, Gu W, Wang L, Meng Q. The Eriocheir sinensis calcium/calmodulin-dependent protein kinase II activates apoptosis to resist Spiroplasma eriocheiris infection. FISH & SHELLFISH IMMUNOLOGY 2022; 121:223-231. [PMID: 34986398 DOI: 10.1016/j.fsi.2021.12.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 12/21/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
Calcium/calmodulin-dependent protein kinase II is a downstream mediator of calcium signalling and participates in the regulation of various cellular physiological functions. In previous studies, the expression of Eriocheir sinensis CaMKII (EsCaMKII) was significantly decreased in the thoracic ganglion after Spiroplasma eriocheiris infection, as shown using TMT-based quantitative proteomic analysis; however, the specific functions of EsCaMKII are still unclear. In this study, the full-length cDNA of EsCaMKII was 3314 bp long, consisting of a 1605 bp open reading frame encoding a protein of 535 amino acids, including a 258 aa serine/threonine protein kinase catalytic domain (EsCaMKII-CD). EsCaMKII is highly transcribed in haemocytes, nerves (thoracic ganglion), gills, and muscles, but lowly transcribed in the hepatopancreas, heart, and intestines. The transcription levels of EsCaMKII were altered in E. sinensis haemocytes after S. eriocheiris infection. After the over-expression of EsCaMKII-CD in RAW264.7 cells, the apoptosis rate of RAW264.7 cells was significantly increased. After the over-expression of EsCaMKII-CD, the morphology of RAW264.7 cells became worse after being infected with S. eriocheiris. Meanwhile, the copy number of S. eriocheiris in RAW264.7 cells was significantly decreased. From 48 h to 96 h after EsCaMKII RNA interference, the transcription levels of EsCaMKII decreased significantly. The transcription of apoptosis genes and cell apoptosis were also inhibited in haemocytes after EsCaMKII RNAi. The knockdown of EsCaMKII by RNAi resulted in significant increases in the copy number of S. eriocheiris and in the mortality of crabs during S. eriocheiris infection. These results indicate that EsCaMKII could promote the apoptosis of E. sinensis and enhance its ability to resist S. eriocheiris infection.
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Affiliation(s)
- Chen Huang
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Jie Du
- Animal Husbandry and Veterinary College, Jiangsu Vocational College of Agriculture and Forestry, Jurong, Jiangsu 212400, China
| | - Bairu Ji
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Sinan Gong
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Chao Geng
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Yanyang Miao
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Qingchun Shen
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Wei Gu
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Li Wang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, 610041, China.
| | - Qingguo Meng
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China.
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Komolov KE, Sulon SM, Bhardwaj A, van Keulen SC, Duc NM, Laurinavichyute DK, Lou HJ, Turk BE, Chung KY, Dror RO, Benovic JL. Structure of a GRK5-Calmodulin Complex Reveals Molecular Mechanism of GRK Activation and Substrate Targeting. Mol Cell 2020; 81:323-339.e11. [PMID: 33321095 DOI: 10.1016/j.molcel.2020.11.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 09/15/2020] [Accepted: 11/12/2020] [Indexed: 10/22/2022]
Abstract
The phosphorylation of G protein-coupled receptors (GPCRs) by GPCR kinases (GRKs) facilitates arrestin binding and receptor desensitization. Although this process can be regulated by Ca2+-binding proteins such as calmodulin (CaM) and recoverin, the molecular mechanisms are poorly understood. Here, we report structural, computational, and biochemical analysis of a CaM complex with GRK5, revealing how CaM shapes GRK5 response to calcium. The CaM N and C domains bind independently to two helical regions at the GRK5 N and C termini to inhibit GPCR phosphorylation, though only the C domain interaction disrupts GRK5 membrane association, thereby facilitating cytoplasmic translocation. The CaM N domain strongly activates GRK5 via ordering of the amphipathic αN-helix of GRK5 and allosteric disruption of kinase-RH domain interaction for phosphorylation of cytoplasmic GRK5 substrates. These results provide a framework for understanding how two functional effects, GRK5 activation and localization, can cooperate under control of CaM for selective substrate targeting by GRK5.
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Affiliation(s)
- Konstantin E Komolov
- Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Sarah M Sulon
- Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Anshul Bhardwaj
- Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Siri C van Keulen
- Department of Computer Science, Department of Molecular and Cellular Physiology, Department of Structural Biology, and Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Nguyen Minh Duc
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, South Korea; Division of Precision Medicine, Research Institute, National Cancer Center, Goyang, South Korea
| | - Daniela K Laurinavichyute
- Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Hua Jane Lou
- Department of Pharmacology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Benjamin E Turk
- Department of Pharmacology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Ka Young Chung
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, South Korea
| | - Ron O Dror
- Department of Computer Science, Department of Molecular and Cellular Physiology, Department of Structural Biology, and Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA 94305, USA; Biophysics Program, Stanford University, Stanford, CA 94305, USA
| | - Jeffrey L Benovic
- Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA.
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Capraro A, O'Meally D, Waters SA, Patel HR, Georges A, Waters PD. MicroRNA dynamics during hibernation of the Australian central bearded dragon (Pogona vitticeps). Sci Rep 2020; 10:17854. [PMID: 33082398 PMCID: PMC7576210 DOI: 10.1038/s41598-020-73706-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 09/17/2020] [Indexed: 11/12/2022] Open
Abstract
Hibernation is a physiological state employed by many animals that are exposed to limited food and adverse winter conditions. Controlling tissue-specific and organism wide changes in metabolism and cellular function requires precise regulation of gene expression, including by microRNAs (miRNAs). Here we profile miRNA expression in the central bearded dragon (Pogona vitticeps) using small RNA sequencing of brain, heart, and skeletal muscle from individuals in late hibernation and four days post-arousal. A total of 1295 miRNAs were identified in the central bearded dragon genome; 664 of which were novel to central bearded dragon. We identified differentially expressed miRNAs (DEmiRs) in all tissues and correlated mRNA expression with known and predicted target mRNAs. Functional analysis of DEmiR targets revealed an enrichment of differentially expressed mRNA targets involved in metabolic processes. However, we failed to reveal biologically relevant tissue-specific processes subjected to miRNA-mediated regulation in heart and skeletal muscle. In brain, neuroprotective pathways were identified as potential targets regulated by miRNAs. Our data suggests that miRNAs are necessary for modulating the shift in cellular metabolism during hibernation and regulating neuroprotection in the brain. This study is the first of its kind in a hibernating reptile and provides key insight into this ephemeral phenotype.
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Affiliation(s)
- Alexander Capraro
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, UNSW Sydney, Kensington, NSW, 2052, Australia.
| | - Denis O'Meally
- Institute for Applied Ecology, University of Canberra, Canberra, ACT, 2601, Australia
- Center for Gene Therapy, Beckman Research Institute of the City of Hope, Duarte, CA, 91010, USA
| | - Shafagh A Waters
- School of Women's & Children's Health, Faculty of Medicine, UNSW Sydney, Kensington, NSW, 2052, Australia
| | - Hardip R Patel
- John Curtin School of Medical Research, Australian National University, Canberra, ACT, Australia
| | - Arthur Georges
- Institute for Applied Ecology, University of Canberra, Canberra, ACT, 2601, Australia
| | - Paul D Waters
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, UNSW Sydney, Kensington, NSW, 2052, Australia
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Gattoni G, Bernocchi G. Calcium-Binding Proteins in the Nervous System during Hibernation: Neuroprotective Strategies in Hypometabolic Conditions? Int J Mol Sci 2019; 20:ijms20092364. [PMID: 31086053 PMCID: PMC6540041 DOI: 10.3390/ijms20092364] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 05/06/2019] [Accepted: 05/11/2019] [Indexed: 02/07/2023] Open
Abstract
Calcium-binding proteins (CBPs) can influence and react to Ca2+ transients and modulate the activity of proteins involved in both maintaining homeostatic conditions and protecting cells in harsh environmental conditions. Hibernation is a strategy that evolved in vertebrate and invertebrate species to survive in cold environments; it relies on molecular, cellular, and behavioral adaptations guided by the neuroendocrine system that together ensure unmatched tolerance to hypothermia, hypometabolism, and hypoxia. Therefore, hibernation is a useful model to study molecular neuroprotective adaptations to extreme conditions, and can reveal useful applications to human pathological conditions. In this review, we describe the known changes in Ca2+-signaling and the detection and activity of CBPs in the nervous system of vertebrate and invertebrate models during hibernation, focusing on cytosolic Ca2+ buffers and calmodulin. Then, we discuss these findings in the context of the neuroprotective and neural plasticity mechanisms in the central nervous system: in particular, those associated with cytoskeletal proteins. Finally, we compare the expression of CBPs in the hibernating nervous system with two different conditions of neurodegeneration, i.e., platinum-induced neurotoxicity and Alzheimer's disease, to highlight the similarities and differences and demonstrate the potential of hibernation to shed light into part of the molecular mechanisms behind neurodegenerative diseases.
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Affiliation(s)
- Giacomo Gattoni
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK.
| | - Graziella Bernocchi
- Former Full Professor of Zoology, Neurogenesis and Comparative Neuromorphology, (Residence address) Viale Matteotti 73, I-27100 Pavia, Italy.
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Chakraborty S, Elvezio V, Kaczocha M, Rebecchi M, Puopolo M. Presynaptic inhibition of transient receptor potential vanilloid type 1 (TRPV1) receptors by noradrenaline in nociceptive neurons. J Physiol 2017; 595:2639-2660. [PMID: 28094445 DOI: 10.1113/jp273455] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/23/2016] [Indexed: 12/20/2022] Open
Abstract
KEY POINTS The transient receptor potential vanilloid type 1 (TRPV1) receptor is a polymodal molecular integrator in the pain pathway expressed in Aδ- and C-fibre nociceptors and is responsible for the thermal hyperalgesia associated with inflammatory pain. Noradrenaline strongly inhibited the activity of TRPV1 channels in dorsal root ganglia neurons. The effect of noradrenaline was reproduced by clonidine and antagonized by yohimbine, consistent with contribution of α2 adrenergic receptors. The inhibitory effect of noradrenaline on TRPV1 channels was dependent on calcium influx and linked to calcium/calmodulin-dependent protein kinase II. In spinal cord slices, clonidine reduced the frequency of capsaicin-induced miniature EPSCs in the presence of tetrodotoxin and ω-conotoxin-MVIIC, consistent with inhibition of presynaptic TRPV1 channels by α2 adrenergic receptors. We suggest that modulation of presynaptic TRPV1 channels in nociceptive neurons by descending noradrenergic inputs may constitute a mechanism for noradrenaline to modulate incoming noxious stimuli in the dorsal horn of the spinal cord. ABSTRACT The transient receptor potential vanilloid type 1 (TRPV1) receptor is a well-known contributor to nociceptor excitability. To address whether noradrenaline can down-regulate TRPV1 channel activity in nociceptors and reduce their synaptic transmission, the effects of noradrenaline and clonidine were tested on the capsaicin-activated current recorded from acutely dissociated small diameter (<27 μm) dorsal root ganglia (DRG) neurons and on miniature (m)EPSCs recorded from large lamina I neurons in horizontal spinal cord slices. Noradrenaline or clonidine inhibited the capsaicin-activated current by ∼60%, and the effect was reversed by yohimbine, confirming that it was mediated by activation of α2 adrenergic receptors. Similarly, clonidine reduced the frequency of capsaicin-induced mEPSCs by ∼60%. Inhibition of capsaicin-activated current by noradrenaline was mediated by GTP binding proteins, and was highly dependent on calcium influx. The inhibitory effect of noradrenaline on the capsaicin-activated current was not affected either by blocking the activity of protein kinase A with H89, or by blocking the activity of protein kinase C with bisindolylmaleimide II. In contrast, when the calcium/calmodulin-dependent protein kinase II (CaMKII) was blocked with KN-93, the inhibitory effect of noradrenaline on the capsaicin-activated current was greatly reduced, suggesting that activation of adrenergic receptors in DRG neurons is preferentially linked to CaMKII activity. We suggest that modulation of TRPV1 channels by noradrenaline in nociceptive neurons is a mechanism whereby noradrenaline may suppress incoming noxious stimuli at the primary synaptic afferents in the dorsal horn of the spinal cord.
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Affiliation(s)
- Saikat Chakraborty
- Department of Anesthesiology, Stony Brook Medicine, Stony Brook, NY, 11794, USA.,Present address: Department of Biochemistry, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL, 60612, USA
| | - Vincent Elvezio
- Department of Anesthesiology, Stony Brook Medicine, Stony Brook, NY, 11794, USA
| | - Martin Kaczocha
- Department of Anesthesiology, Stony Brook Medicine, Stony Brook, NY, 11794, USA
| | - Mario Rebecchi
- Department of Anesthesiology, Stony Brook Medicine, Stony Brook, NY, 11794, USA
| | - Michelino Puopolo
- Department of Anesthesiology, Stony Brook Medicine, Stony Brook, NY, 11794, USA
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Simon B, Huart AS, Temmerman K, Vahokoski J, Mertens HDT, Komadina D, Hoffmann JE, Yumerefendi H, Svergun DI, Kursula P, Schultz C, McCarthy AA, Hart DJ, Wilmanns M. Death-Associated Protein Kinase Activity Is Regulated by Coupled Calcium/Calmodulin Binding to Two Distinct Sites. Structure 2016; 24:851-61. [PMID: 27133022 PMCID: PMC4906247 DOI: 10.1016/j.str.2016.03.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/27/2016] [Accepted: 03/10/2016] [Indexed: 01/02/2023]
Abstract
The regulation of many protein kinases by binding to calcium/calmodulin connects two principal mechanisms in signaling processes: protein phosphorylation and responses to dose- and time-dependent calcium signals. We used the calcium/calmodulin-dependent members of the death-associated protein kinase (DAPK) family to investigate the role of a basic DAPK signature loop near the kinase active site. In DAPK2, this loop comprises a novel dimerization-regulated calcium/calmodulin-binding site, in addition to a well-established calcium/calmodulin site in the C-terminal autoregulatory domain. Unexpectedly, impairment of the basic loop interaction site completely abolishes calcium/calmodulin binding and DAPK2 activity is reduced to a residual level, indicative of coupled binding to the two sites. This contrasts with the generally accepted view that kinase calcium/calmodulin interactions are autonomous of the kinase catalytic domain. Our data establish an intricate model of multi-step kinase activation and expand our understanding of how calcium binding connects with other mechanisms involved in kinase activity regulation. Members of the DAPK family share a specific basic-loop-mediated dimerization motif DAPK2 contains a kinase-mediated and dimerization-regulated CaM-binding site Autoregulatory segment CaM binding depends on kinase-mediated CaM binding DAPK2 activity is regulated by coupled CaM binding to two different sites
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Affiliation(s)
- Bertrand Simon
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany
| | - Anne-Sophie Huart
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany
| | - Koen Temmerman
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany
| | - Juha Vahokoski
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany
| | - Haydyn D T Mertens
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany
| | - Dana Komadina
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany
| | - Jan-Erik Hoffmann
- European Molecular Biology Laboratory, Cell Biology and Biophysics Unit, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Hayretin Yumerefendi
- European Molecular Biology Laboratory, Grenoble Outstation, 71 Avenue des Martyrs, CS 90181, 38042 Grenoble Cedex 9, France
| | - Dmitri I Svergun
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany
| | - Petri Kursula
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany; Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5020 Bergen, Norway
| | - Carsten Schultz
- European Molecular Biology Laboratory, Cell Biology and Biophysics Unit, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Andrew A McCarthy
- European Molecular Biology Laboratory, Grenoble Outstation, 71 Avenue des Martyrs, CS 90181, 38042 Grenoble Cedex 9, France; University Grenoble Alpes, Centre National de la Recherche Scientifique-EMBL, Unit of Virus Host-Cell Interactions, 71 Avenue des Martyrs, CS 90181, 38042 Grenoble Cedex 9, France
| | - Darren J Hart
- European Molecular Biology Laboratory, Grenoble Outstation, 71 Avenue des Martyrs, CS 90181, 38042 Grenoble Cedex 9, France; University Grenoble Alpes, Centre National de la Recherche Scientifique-EMBL, Unit of Virus Host-Cell Interactions, 71 Avenue des Martyrs, CS 90181, 38042 Grenoble Cedex 9, France
| | - Matthias Wilmanns
- European Molecular Biology Laboratory, Hamburg Unit, Notkestrasse 85, 22607 Hamburg, Germany; University of Hamburg Clinical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.
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