The protein-folding activity of chaperonins correlates with the symmetric GroEL14(GroES7)2 heterooligomer.

Détails

ID Serval
serval:BIB_D435AE9527B2
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
The protein-folding activity of chaperonins correlates with the symmetric GroEL14(GroES7)2 heterooligomer.
Périodique
Proceedings of the National Academy of Sciences of the United States of America
Auteur(s)
Azem A., Diamant S., Kessel M., Weiss C., Goloubinoff P.
ISSN
0027-8424 (Print)
ISSN-L
0027-8424
Statut éditorial
Publié
Date de publication
1995
Volume
92
Numéro
26
Pages
12021-12025
Langue
anglais
Résumé
Chaperonins GroEL and GroES form, in the presence of ATP, two types of heterooligomers in solution: an asymmetric GroEL14GroES7 "bullet"-shaped particle and a symmetric GroEL14(GroES7)2 "football"-shaped particle. Under limiting concentrations of ATP or GroES, excess ADP, or in the presence of 5'-adenylyl imidodiphosphate, a correlation is seen between protein folding and the amount of symmetric GroEL14(GroES7)2 particles in a chaperonin solution, as detected by electron microscopy or by chemical crosslinking. Kinetic analysis suggests that protein folding is more efficient when carried out by a chaperonin solution populated with a majority of symmetric GroEL14(GroES7)2 particles than by a majority of asymmetric GroEL14GroES7 particles. The symmetric heterooligomer behaves as a highly efficient intermediate of the chaperonin protein folding cycle in vitro.
Mots-clé
Adenosine Diphosphate/metabolism, Adenosine Triphosphate/metabolism, Animals, Chaperonin 10/chemistry, Chaperonin 10/isolation & purification, Chaperonin 60/chemistry, Chaperonin 60/isolation & purification, Chaperonins/metabolism, Cross-Linking Reagents, Kinetics, Macromolecular Substances, Malate Dehydrogenase/chemistry, Malate Dehydrogenase/metabolism, Mitochondria, Heart/enzymology, Protein Folding, Recombinant Proteins/chemistry, Recombinant Proteins/metabolism, Ribulose-Bisphosphate Carboxylase/chemistry, Ribulose-Bisphosphate Carboxylase/metabolism, Swine
Pubmed
Web of science
Open Access
Oui
Création de la notice
24/01/2008 21:02
Dernière modification de la notice
20/08/2019 16:54
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