2023
Conformational changes upon phosphorylation of proline rich region of tau(210-240) peptide using molecular dynamic simulation
BERA, Krishnendu; Isabelle LANDRIEU a Jozef HRITZZákladní údaje
Originální název
Conformational changes upon phosphorylation of proline rich region of tau(210-240) peptide using molecular dynamic simulation
Autoři
BERA, Krishnendu; Isabelle LANDRIEU a Jozef HRITZ
Vydání
XIX Discussions in Structural Molecular Biology and 6th User Meeting of CIISB (Czech Infrastructure for Integrative Structural Biology), Nove Hrady, South Bohemia, 23-25 March 2023, 2023
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
10400 1.4 Chemical sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Označené pro přenos do RIV
Ne
Organizační jednotka
Středoevropský technologický institut
Příznaky
Recenzováno
Změněno: 21. 3. 2024 08:46, Mgr. Eva Dubská
Anotace
V originále
The conformational dynamics of intrinsically disordered proteins (IDPs) regulated by post-translational modifications (PTMs) such as phosphorylation is challenging to elucidate. A well-known IDP Tau is found hyper-phosphorylated in Alzheimer’s disease (AD) in humans. The proline-rich motif of tau (210-240) peptide directly interacts with proteins such as BIN1, 14-3-3 etc. Microsecond time scale, all atoms molecular dynamic (MD) simulation studies have been performed for apo and four phosphorylated (212pThr, 217pThr, 231pThr, 235pSer) tau(210-240) peptide using three different temperature variants (278K, 298K and 310K) and two different force field parameters (AMBER99SB-ILDN and CHARMM36m) with TIP4PD water model as these force fields parameters combine with water model worked the better for IDPs found from our group previous studies. These four-phosphorylations cause increase in compactness of the peptide. The binding of associated proteins like BIN1 with tau may alter by the strong salt bridges, forming nearby lysine and arginine due to the phosphorylation. Phosphorylation induces a strong structural transition, with tau (210-240) favouring a bent conformation. The MD simulation results were verified using NMR experimental parameters like chemical shift and 3J-coupling.
Návaznosti
| GF20-05789L, projekt VaV |
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| LM2018140, projekt VaV |
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| LTAUSA18168, projekt VaV |
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| MUNI/A/1414/2022, interní kód MU |
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| 101087124, interní kód MU |
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| 90140, velká výzkumná infrastruktura |
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