Single-Ring Intermediates Are Essential for Some Chaperonins
Overview
Authors
Affiliations
Chaperonins are macromolecular complexes found throughout all kingdoms of life that assist unfolded proteins reach a biologically active state. Historically, chaperonins have been classified into two groups based on sequence, subunit structure, and the requirement for a co-chaperonin. Here, we present a brief review of chaperonins that can form double- and single-ring conformational intermediates in their protein-folding catalytic pathway. To date, the bacteriophage encoded chaperonins ϕ-EL and OBP, human mitochondrial chaperonin and most recently, the bacterial groEL/ES systems, have been reported to form single-ring intermediates as part of their normal protein-folding activity. These double-ring chaperonins separate into single-ring intermediates that have the ability to independently fold a protein. We discuss the structural and functional features along with the biological relevance of single-ring intermediates in cellular protein folding. Of special interest are the ϕ-EL and OBP chaperonins which demonstrate features of both group I and II chaperonins in addition to their ability to function via single-ring intermediates.
Impact of Non-Invasive Physical Plasma on Heat Shock Protein Functionality in Eukaryotic Cells.
Wang Y, Abazid A, Badendieck S, Mustea A, Stope M Biomedicines. 2023; 11(5).
PMID: 37239142 PMC: 10216214. DOI: 10.3390/biomedicines11051471.
Nkungli N, Tamafo Fouegue A, Tasheh S, Bine F, Hassan A, Ghogomu J Mol Divers. 2023; 28(2):475-496.
PMID: 36622482 PMC: 9838286. DOI: 10.1007/s11030-022-10594-3.
Insights Into the Role of Heat Shock Protein 27 in the Development of Neurodegeneration.
Holguin B, Hildenbrand Z, Bernal R Front Mol Neurosci. 2022; 15:868089.
PMID: 35431800 PMC: 9005852. DOI: 10.3389/fnmol.2022.868089.
Heat shock proteins with an emphasis on HSP 60.
Malik J, Lone R Mol Biol Rep. 2021; 48(10):6959-6969.
PMID: 34498161 DOI: 10.1007/s11033-021-06676-4.
Complex Destabilization in the Mitochondrial Chaperonin Hsp60 Leads to Disease.
Rodriguez A, Von Salzen D, Holguin B, Bernal R Front Mol Biosci. 2020; 7:159.
PMID: 32766281 PMC: 7381220. DOI: 10.3389/fmolb.2020.00159.