2022
Specific phosphorylation of microtubule-associated protein 2c by extracellular signal–regulated kinase reduces interactions at its Pro-rich regions
PLUCAROVÁ, Jitka, Séverine JANSEN, Subhash NARASIMHAN, Alice LANÍKOVÁ, Marc LEWITZKY et. al.Základní údaje
Originální název
Specific phosphorylation of microtubule-associated protein 2c by extracellular signal–regulated kinase reduces interactions at its Pro-rich regions
Autoři
PLUCAROVÁ, Jitka (203 Česká republika, domácí), Séverine JANSEN (250 Francie, domácí), Subhash NARASIMHAN (356 Indie, domácí), Alice LANÍKOVÁ (203 Česká republika, domácí), Marc LEWITZKY, M. Stephan FELLER a Lukáš ŽÍDEK (203 Česká republika, garant, domácí)
Vydání
JOURNAL OF BIOLOGICAL CHEMISTRY, UNITED STATES, ELSEVIER, 2022, 0021-9258
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.157 v roce 2020
Kód RIV
RIV/00216224:14740/22:00126868
Organizační jednotka
Středoevropský technologický institut
UT WoS
000867425500004
Klíčová slova anglicky
NMR; PKA; Src homology 3 domain; cyclin-dependent kinase; extracellular signal–regulated kinase; growth factor receptor-bound protein 2 (GRB2); microtubule-associated protein
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 9. 10. 2024 13:18, Ing. Martina Blahová
Anotace
V originále
Microtubule-associated protein 2 (MAP2) is an important neuronal target of extracellular signal–regulated kinase 2 (ERK2) involved in Raf signaling pathways, but mechanistic details of MAP2 phosphorylation are unclear. Here, we used NMR spectroscopy to quantitatively describe the kinetics of phosphorylation of individual serines and threonines in the embryonic MAP2 variant MAP2c. We carried out real-time monitoring of phosphorylation to discover major phosphorylation sites that were not identified in previous studies relying on specific antibodies. Our comparison with the phosphorylation of MAP2c by a model cyclin-dependent kinase CDK2 and with phosphorylation of the MAP2c homolog Tau revealed differences in phosphorylation profiles that explain specificity of regulation of biological functions of MAP2c and Tau. To probe the molecular basis of the regulatory effect of ERK2, we investigated the interactions of phosphorylated and unphosphorylated MAP2c by NMR with single-residue resolution. As ERK2 phosphorylates mostly outside the regions binding microtubules, we studied the binding of proteins other than tubulin, namely regulatory subunit RIIα of cAMP-dependent PKA, adapter protein Grb2, Src homology domain 3 of tyrosine kinases Fyn and Abl, and ERK2 itself. We found ERK2 phosphorylation interfered mostly with binding to proline-rich regions of MAP2c. Furthermore, our NMR experiments in SH-SY5Y neuroblastoma cell lysates showed that the kinetics of dephosphorylation are compatible with in-cell NMR studies and that residues targeted by ERK2 and PKA are efficiently phosphorylated in the cell lysates. Taken together, our results provide a deeper characterization of MAP2c phosphorylation and its effects on interactions with other proteins.
Návaznosti
GA20-12669S, projekt VaV |
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90127, velká výzkumná infrastruktura |
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