Structure of the human TRiC/CCT Subunit 5 associated with hereditary sensory neuropathy

Abstract The human chaperonin TRiC consists of eight non-identical subunits, and its protein-folding activity is critical for cellular health. Misfolded proteins are associated with many human diseases, such as amyloid diseases, cancer, and neuropathies, making TRiC a potential therapeutic target. A...

Description complète

Enregistré dans:
Détails bibliographiques
Auteurs principaux: Jose H. Pereira, Ryan P. McAndrew, Oksana A. Sergeeva, Corie Y. Ralston, Jonathan A. King, Paul D. Adams
Format: article
Langue:EN
Publié: Nature Portfolio 2017
Sujets:
R
Q
Accès en ligne:https://doaj.org/article/380cea13dfbc4d1c99c09ee67ecb6f29
Tags: Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
Description
Résumé:Abstract The human chaperonin TRiC consists of eight non-identical subunits, and its protein-folding activity is critical for cellular health. Misfolded proteins are associated with many human diseases, such as amyloid diseases, cancer, and neuropathies, making TRiC a potential therapeutic target. A detailed structural understanding of its ATP-dependent folding mechanism and substrate recognition is therefore of great importance. Of particular health-related interest is the mutation Histidine 147 to Arginine (H147R) in human TRiC subunit 5 (CCT5), which has been associated with hereditary sensory neuropathy. In this paper, we describe the crystal structures of CCT5 and the CCT5-H147R mutant, which provide important structural information for this vital protein-folding machine in humans. This first X-ray crystallographic study of a single human CCT subunit in the context of a hexadecameric complex can be expanded in the future to the other 7 subunits that form the TRiC complex.