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14-3-3 proteins inactivate DAPK2 by promoting its dimerization and protecting key regulatory phosphosites
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SYSNO ASEP 0545402 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title 14-3-3 proteins inactivate DAPK2 by promoting its dimerization and protecting key regulatory phosphosites Author(s) Horváth, Matej (FGU-C) ORCID
Petrvalská, Olivia (FGU-C) RID, ORCID, SAI
Herman, P. (CZ)
Obšilová, Veronika (FGU-C) RID, ORCID, SAI
Obšil, Tomáš (FGU-C) RID, ORCIDArticle number 986 Source Title Communications Biology. - : Nature Publishing Group
Roč. 4, č. 1 (2021)Number of pages 14 s. Language eng - English Country GB - United Kingdom Keywords protein structure and function ; protein kinase ; DAPK ; 14-3-3 protein ; apoptosis ; phosphorylation Subject RIV CE - Biochemistry OECD category Biochemistry and molecular biology R&D Projects GA19-00121S GA ČR - Czech Science Foundation (CSF) Research Infrastructure CIISB II - 90127 - Masarykova univerzita Method of publishing Open access Institutional support FGU-C - RVO:67985823 UT WOS 000686777300004 EID SCOPUS 85113253261 DOI 10.1038/s42003-021-02518-y Annotation Death-associated protein kinase 2 (DAPK2) is a CaM-regulated Ser/Thr protein kinase, involved in apoptosis, autophagy, granulocyte differentiation and motility regulation, whose activity is controlled by autoinhibition, autophosphorylation, dimerization and interaction with scaffolding proteins 14-3-3. However, the structural basis of 14-3-3-mediated DAPK2 regulation remains unclear. Here, we structurally and biochemically characterize the full-length human DAPK2:14-3-3 complex by combining several biophysical techniques. The results from our X-ray crystallographic analysis revealed that Thr369 phosphorylation at the DAPK2 C terminus creates a high-affinity canonical mode III 14-3-3-binding motif, further enhanced by the diterpene glycoside Fusicoccin A. Moreover, concentration-dependent DAPK2 dimerization is disrupted by Ca2+/CaM binding and stabilized by 14-3-3 binding in solution, thereby protecting the DAPK2 inhibitory autophosphorylation site Ser318 against dephosphorylation and preventing Ca2+/CaM binding. Overall, our findings provide mechanistic insights into 14-3-3-mediated DAPK2 inhibition and highlight the potential of the DAPK2:14-3-3 complex as a target for anti‐inflammatory therapies. Workplace Institute of Physiology Contact Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Year of Publishing 2022 Electronic address https://doi.org/10.1038/s42003-021-02518-y
Number of the records: 1