Structure and allostery of the chaperonin GroEL

HR Saibil, WA Fenton, DK Clare, AL Horwich - Journal of molecular biology, 2013 - Elsevier
Chaperonins are intricate allosteric machines formed of two back-to-back, stacked rings of
subunits presenting end cavities lined with hydrophobic binding sites for nonnative …

Chaperonin mechanisms: Multiple and (mis) understood?

A Horovitz, TH Reingewertz, J Cuéllar… - Annual review of …, 2022 - annualreviews.org
The chaperonins are ubiquitous and essential nanomachines that assist in protein folding in
an ATP-driven manner. They consist of two back-to-back stacked oligomeric rings with …

Chaperonin-mediated protein folding: using a central cavity to kinetically assist polypeptide chain folding

AL Horwich, WA Fenton - Quarterly reviews of biophysics, 2009 - cambridge.org
The chaperonin ring assembly GroEL provides kinetic assistance to protein folding in the
cell by binding non-native protein in the hydrophobic central cavity of an open ring and …

Common crowding agents have only a small effect on protein-protein interactions

Y Phillip, E Sherman, G Haran, G Schreiber - Biophysical journal, 2009 - cell.com
Studies of protein-protein interactions, carried out in polymer solutions, are designed to
mimic the crowded environment inside living cells. It was shown that crowding enhances …

Chaperonin-assisted protein folding: a chronologue

AL Horwich, WA Fenton - Quarterly reviews of biophysics, 2020 - cambridge.org
This chronologue seeks to document the discovery and development of an understanding of
oligomeric ring protein assemblies known as chaperonins that assist protein folding in the …

Allosteric mechanisms in chaperonin machines

R Gruber, A Horovitz - Chemical Reviews, 2016 - ACS Publications
Chaperonins are nanomachines that facilitate protein folding by undergoing energy (ATP)-
dependent movements that are coordinated in time and space owing to complex allosteric …

[HTML][HTML] The GroEL/GroES cis cavity as a passive anti-aggregation device

AL Horwich, AC Apetri, WA Fenton - FEBS letters, 2009 - Elsevier
The GroEL/GroES chaperonin folding chamber is an encapsulated space of∼ 65Å diameter
with a hydrophilic wall, inside of which many cellular proteins reach the native state. The …

Distinguishing between concerted, sequential and barrierless conformational changes: Folding versus allostery

M Roy, A Horovitz - Current Opinion in Structural Biology, 2023 - Elsevier
Abstract Characterization of transition and intermediate states of reactions provides insights
into their mechanisms and is often achieved through analysis of linear free energy …

Sequential allosteric mechanism of ATP hydrolysis by the CCT/TRiC chaperone is revealed through Arrhenius analysis

R Gruber, M Levitt, A Horovitz - Proceedings of the National …, 2017 - National Acad Sciences
Knowing the mechanism of allosteric switching is important for understanding how
molecular machines work. The CCT/TRiC chaperonin nanomachine undergoes ATP-driven …

Assisting oxidative protein folding: how do protein disulphide-isomerases couple conformational and chemical processes in protein folding?

AK Wallis, RB Freedman - Molecular Chaperones, 2013 - Springer
Oxidative folding is the simultaneous process of forming disulphide bonds and native
structure in proteins. Pathways of oxidative folding are highly diverse and in eukaryotes are …