1
|
Dupuy E, Van der Verren SE, Lin J, Wilson MA, Dachsbeck AV, Viela F, Latour E, Gennaris A, Vertommen D, Dufrêne YF, Iorga BI, Goemans CV, Remaut H, Collet JF. A molecular device for the redox quality control of GroEL/ES substrates. Cell 2023; 186:1039-1049.e17. [PMID: 36764293 PMCID: PMC10044410 DOI: 10.1016/j.cell.2023.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 10/27/2022] [Accepted: 01/10/2023] [Indexed: 02/11/2023]
Abstract
Hsp60 chaperonins and their Hsp10 cofactors assist protein folding in all living cells, constituting the paradigmatic example of molecular chaperones. Despite extensive investigations of their structure and mechanism, crucial questions regarding how these chaperonins promote folding remain unsolved. Here, we report that the bacterial Hsp60 chaperonin GroEL forms a stable, functionally relevant complex with the chaperedoxin CnoX, a protein combining a chaperone and a redox function. Binding of GroES (Hsp10 cofactor) to GroEL induces CnoX release. Cryoelectron microscopy provided crucial structural information on the GroEL-CnoX complex, showing that CnoX binds GroEL outside the substrate-binding site via a highly conserved C-terminal α-helix. Furthermore, we identified complexes in which CnoX, bound to GroEL, forms mixed disulfides with GroEL substrates, indicating that CnoX likely functions as a redox quality-control plugin for GroEL. Proteins sharing structural features with CnoX exist in eukaryotes, suggesting that Hsp60 molecular plugins have been conserved through evolution.
Collapse
Affiliation(s)
- Emile Dupuy
- WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium; de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium
| | - Sander Egbert Van der Verren
- Structural Biology Brussels, Vrije Universiteit Brussel, 1050 Brussels, Belgium; Structural and Molecular Microbiology, Structural Biology Research Center, VIB, 1050 Brussels, Belgium
| | - Jiusheng Lin
- Department of Biochemistry and the Redox Biology Center, University of Nebraska, Lincoln, NE 68588, USA
| | - Mark Alan Wilson
- Department of Biochemistry and the Redox Biology Center, University of Nebraska, Lincoln, NE 68588, USA
| | - Alix Vincent Dachsbeck
- WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium; de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium
| | - Felipe Viela
- Louvain Institute of Biomolecular Science and Technology, Université Catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-neuve, Belgium
| | - Emmanuelle Latour
- WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium; de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium
| | - Alexandra Gennaris
- WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium; de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium
| | - Didier Vertommen
- de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium
| | - Yves Frédéric Dufrêne
- Louvain Institute of Biomolecular Science and Technology, Université Catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-neuve, Belgium
| | - Bogdan Iuliu Iorga
- WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium; de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium; Université Paris-Saclay, CNRS UPR 2301, Institut de Chimie des Substances Naturelles, 91198 Gif-sur-Yvette, France
| | - Camille Véronique Goemans
- WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium; de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium; European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.
| | - Han Remaut
- Structural Biology Brussels, Vrije Universiteit Brussel, 1050 Brussels, Belgium; Structural and Molecular Microbiology, Structural Biology Research Center, VIB, 1050 Brussels, Belgium.
| | - Jean-François Collet
- WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium; de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium.
| |
Collapse
|