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

Journal Article · · Scientific Reports
 [1];  [1];  [2];  [3];  [2];  [4]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Biophysics and Integrated Bioimaging Division
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Biology Dept.
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Biophysics and Integrated Bioimaging Division, Berkeley Center for Structural Biology
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Biophysics and Integrated Bioimaging Division; Univ. of California, Berkeley, CA (United States). Dept. of Bioengineering
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.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1379932
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 7; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

Structural and functional analysis of the role of the chaperonin CCT in mTOR complex assembly journal June 2019
Mitochondrial stress management: a dynamic journey journal October 2018
Compensatory growth renders Tcf7l1a dispensable for eye formation despite its requirement in eye field specification. journalarticle January 2019
Myelin Pathology: Involvement of Molecular Chaperones and the Promise of Chaperonotherapy journal October 2019
Molecular mechanisms in chaperonopathies: clues to understanding the histopathological abnormalities and developing novel therapies journal November 2019
Co-expression of CCT subunits hints at TRiC assembly journal August 2019
Fasting differentially alters the hypothalamic proteome of chickens from lines with the propensity to be anorexic or obese journal April 2019
Bridging human chaperonopathies and microbial chaperonins journal March 2019
The structure and evolution of eukaryotic chaperonin-containing TCP-1 and its mechanism that folds actin into a protein spring journal October 2018
Compensatory growth renders Tcf7l1a dispensable for eye formation despite its requirement in eye field specification journal February 2019

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