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.Základní údaje
Originální název
Structural basis of binding the unique N-terminal domain of microtubule-associated protein 2c to proteins regulating kinases of signaling pathways.
Autoři
BARTOŠÍK, Viktor, Jitka PLUCAROVÁ, Alice LANÍKOVÁ, Zuzana JANÁČKOVÁ, Petr PADRTA, Séverine JANSEN, Vojtěch VAŘEČKA, Tobias GRUBER, Stephan M. FELLER a Lukáš ŽÍDEK
Vydání
International Journal of Biological Chemistry, ANSInet, 2024, 1819-155X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10700 1.7 Other natural sciences
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova anglicky
A-kinase anchoring protein (AKAP); growth factor receptor-bound protein 2 (GRB2); microtubule associated protein (MAP) 2; nuclear magnetic resonance (NMR); protein kinase A (PKA)
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 1. 10. 2024 17:40, Mgr. Viktor Bartošík
Anotace
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 RIIα 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 α-helix of MAP2c upon binding, defining orientation of the α-helix 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 cAMP-dependent phosphorylation cascade via interactions with RIIDD2 and Ras signaling pathway via interactions with SH2-Grb2.
Návaznosti
CZ.02.1.01/0.0/0.0/18_046/0015974, velká výzkumná infrastruktura (Kód CEP: EF18_046/0015974) |
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GA20-12669S, projekt VaV |
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LM2023042, projekt VaV |
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