2022
Loss of stability and unfolding cooperativity in hPGK1 upon gradual structural perturbation of its N-terminal domain hydrophobic core
JUAN, Luis Pacheco-Garcia, Dmitry S LOGINOV, Athi N NAGANATHAN, Pavla VANKOVA, Mario CANO-MUNOZ et. al.Základní údaje
Originální název
Loss of stability and unfolding cooperativity in hPGK1 upon gradual structural perturbation of its N-terminal domain hydrophobic core
Autoři
JUAN, Luis Pacheco-Garcia, Dmitry S LOGINOV, Athi N NAGANATHAN, Pavla VANKOVA, Mario CANO-MUNOZ, Petr MAN a Angel L PEY
Vydání
Nature Scientific Reports, London, NATURE RESEARCH, 2022, 2045-2322
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.600
Kód RIV
RIV/00216224:14740/22:00128775
Organizační jednotka
Středoevropský technologický institut
UT WoS
000867889200030
Klíčová slova anglicky
Humans; Hydrophobic and Hydrophilic Interactions; Kinetics; Phosphoglycerate Kinase; Protein Denaturation; Protein Folding; Thermodynamics
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 28. 2. 2023 19:14, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Phosphoglycerate kinase has been a model for the stability, folding cooperativity and catalysis of a two-domain protein. The human isoform 1 (hPGK1) is associated with cancer development and rare genetic diseases that affect several of its features. To investigate how mutations affect hPGK1 folding landscape and interaction networks, we have introduced mutations at a buried site in the N-terminal domain (F25 mutants) that either created cavities (F25L, F25V, F25A), enhanced conformational entropy (F25G) or introduced structural strain (F25W) and evaluated their effects using biophysical experimental and theoretical methods. All F25 mutants folded well, but showed reduced unfolding cooperativity, kinetic stability and altered activation energetics according to the results from thermal and chemical denaturation analyses. These alterations correlated well with the structural perturbation caused by mutations in the N-terminal domain and the destabilization caused in the interdomain interface as revealed by H/D exchange under native conditions. Importantly, experimental and theoretical analyses showed that these effects are significant even when the perturbation is mild and local. Our approach will be useful to establish the molecular basis of hPGK1 genotype-phenotype correlations due to phosphorylation events and single amino acid substitutions associated with disease.
Návaznosti
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