| Literature DB >> 28461478 |
Ranit Gruber1, Michael Levitt2, Amnon Horovitz3.
Abstract
Knowing the mechanism of allosteric switching is important for understanding how molecular machines work. The CCT/TRiC chaperonin nanomachine undergoes ATP-driven conformational changes that are crucial for its folding function. Here, we demonstrate that insight into its allosteric mechanism of ATP hydrolysis can be achieved by Arrhenius analysis. Our results show that ATP hydrolysis triggers sequential ‟conformational waves." They also suggest that these waves start from subunits CCT6 and CCT8 (or CCT3 and CCT6) and proceed clockwise and counterclockwise, respectively.Entities:
Keywords: allostery; chaperonins; conformational changes; molecular machines
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Year: 2017 PMID: 28461478 PMCID: PMC5441784 DOI: 10.1073/pnas.1617746114
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205