2024
Structural basis of binding the unique N-terminal domain of microtubule-associated protein 2c to proteins regulating kinases of signaling pathways
BARTOŠÍK, Viktor; Jitka PLUCAROVÁ; Alice LANÍKOVÁ; Zuzana JANÁČKOVÁ; Petr PADRTA et. al.Basic information
Original name
Structural basis of binding the unique N-terminal domain of microtubule-associated protein 2c to proteins regulating kinases of signaling pathways
Authors
BARTOŠÍK, Viktor (203 Czech Republic, belonging to the institution); Jitka PLUCAROVÁ (203 Czech Republic, belonging to the institution); Alice LANÍKOVÁ (203 Czech Republic, belonging to the institution); Zuzana JANÁČKOVÁ (203 Czech Republic, belonging to the institution); Petr PADRTA (203 Czech Republic, belonging to the institution); Séverine JANSEN (250 France, belonging to the institution); Tobias GRUBER; Vojtěch VAŘEČKA (203 Czech Republic, belonging to the institution); Stephan M FELLER and Lukáš ŽÍDEK (203 Czech Republic, belonging to the institution)
Edition
International Journal of Biological Chemistry, AMSTERDAM, ANSInet, 2024, 0021-9258
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10608 Biochemistry and molecular biology
Country of publisher
Netherlands
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 4.000 in 2023
RIV identification code
RIV/00216224:14740/24:00138072
Organization unit
Central European Institute of Technology
UT WoS
001365739800001
EID Scopus
2-s2.0-85200983503
Keywords in English
GENERAL FORCE-FIELD; A ANCHORING PROTEIN; TYROSINE PHOSPHORYLATION; SECONDARY STRUCTURE; DIPOLAR COUPLINGS; HETERONUCLEAR NMR; AKAP SPECIFICITY; MAP2 EXPRESSION; LARGER PROTEINS; SH2 DOMAIN
Tags
International impact, Reviewed
Changed: 3/6/2025 12:29, Mgr. Eva Dubská
Abstract
V originále
Isoforms of microtubule-associated protein 2 (MAP2) differ from their homolog Tau in the sequence and interactions of the N-terminal region. Binding of the N-terminal region of MAP2c (N-MAP2c) to the dimerization/docking domains of the regulatory subunit RIIa of cAMP-dependent protein kinase (RIIDD2) and to the Src-homology domain 2 (SH2) of growth factor receptor-bound protein 2 (Grb2) have been described long time ago. However, the structural features of the complexes remained unknown due to the disordered nature of MAP2. Here, we provide structural description of the complexes. We have solved solution structure of N-MAP2c in complex with RIIDD2, confirming formation of an amphiphilic a-helix of MAP2c upon binding, defining orientation of the ahelix in the complex and showing that its binding register differs from previous predictions. Using chemical shift mapping, we characterized the binding interface of SH2-Grb2 and rat MAP2c phosphorylated by the tyrosine kinase Fyn in their complex and proposed a model explaining differences between SH2-Grb2 complexes with rat MAP2c and phosphopeptides with a Grb2-specific sequence. The results provide the structural basis of a potential role of MAP2 in regulating cAMPdependent phosphorylation cascade via interactions with RIIDD2 and Ras signaling pathway via interactions with SH2
Links
EF18_046/0015974, research and development project |
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GA20-12669S, research and development project |
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MUNI/A/1641/2023, interní kód MU |
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90242, large research infrastructures |
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