The DOI matches its Crossref record; 59 of the 59 references it cites were found in a registry or an index.
Defining the TRiC/CCT interactome links chaperonin function to stabilization of newly made proteins with complex topologies
Open accessAbstract
Folding within the crowded cellular milieu often requires assistance from molecular chaperones that prevent inappropriate interactions leading to aggregation and toxicity. The contribution of individual chaperones to folding the proteome remains elusive. Here we demonstrate that the eukaryotic chaperonin TRiC/CCT (TCP1-ring complex or chaperonin containing TCP1) has broad binding specificity in vitro, similar to the prokaryotic chaperonin GroEL. However, in vivo, TRiC substrate selection is not based solely on intrinsic determinants; instead, specificity is dictated by factors present during protein biogenesis. The identification of cellular substrates revealed that TRiC interacts with folding intermediates of a subset of structurally and functionally diverse polypeptides. Bioinformatics analysis revealed an enrichment in multidomain proteins and regions of β-strand propensity that are predicted to be slow folding and aggregation prone. Thus, TRiC may have evolved to protect complex protein topologies within its central cavity during biosynthesis and folding.
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Metadata
- Authors
- Yam, A. Y., Xia, Y., Lin, H.-T. J., Burlingame, A., Gerstein, M., & Frydman, J.
- Venue
- Nature Structural & Molecular Biology
- Published
- 2008-11-16
- Volume
- 15
- Issue
- 12
- Pages
- 1255-1262
- ISSN
- 1545-9985 (ISSN-L)
- 1545-9993
- OpenAlex
- W2153574614
- Cited by
- 420
- References
- 59
- FWCI
- 6.95
- Type
- journal article
- Language
- en
- Open access
- green
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