1
|
Bagci H, Winkler M, Grädel B, Uliana F, Boulais J, Mohamed WI, Park SL, Côté JF, Pertz O, Peter M. The hGID GID4 E3 ubiquitin ligase complex targets ARHGAP11A to regulate cell migration. Life Sci Alliance 2024; 7:e202403046. [PMID: 39389782 PMCID: PMC11467045 DOI: 10.26508/lsa.202403046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2024] [Revised: 09/24/2024] [Accepted: 09/25/2024] [Indexed: 10/12/2024] Open
Abstract
The human CTLH/GID (hGID) complex emerged as an important E3 ligase regulating multiple cellular processes, including cell cycle progression and metabolism. However, the range of biological functions controlled by hGID remains unexplored. Here, we used proximity-dependent biotinylation (BioID2) to identify proteins interacting with the hGID complex, among them, substrate candidates that bind GID4 in a pocket-dependent manner. Biochemical and cellular assays revealed that the hGIDGID4 E3 ligase binds and ubiquitinates ARHGAP11A, thereby targeting this RhoGAP for proteasomal degradation. Indeed, GID4 depletion or impeding the GID4 substrate binding pocket with the PFI-7 inhibitor stabilizes ARHGAP11A protein amounts, although it carries no functional N-terminal degron. Interestingly, GID4 inactivation impairs cell motility and directed cell movement by increasing ARHGAP11A levels at the cell periphery, where it inactivates RhoA. Together, we identified a wide range of hGIDGID4 E3 ligase substrates and uncovered a unique function of the hGIDGID4 E3 ligase regulating cell migration by targeting ARHGAP11A.
Collapse
Affiliation(s)
- Halil Bagci
- Institute of Biochemistry, Department of Biology, ETH Zürich, Zürich, Switzerland
| | - Martin Winkler
- Institute of Biochemistry, Department of Biology, ETH Zürich, Zürich, Switzerland
| | - Benjamin Grädel
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
- Institute of Cell Biology, University of Bern, Bern, Switzerland
| | - Federico Uliana
- Institute of Biochemistry, Department of Biology, ETH Zürich, Zürich, Switzerland
| | | | - Weaam I Mohamed
- Institute of Biochemistry, Department of Biology, ETH Zürich, Zürich, Switzerland
| | - Sophia L Park
- Institute of Biochemistry, Department of Biology, ETH Zürich, Zürich, Switzerland
| | - Jean-François Côté
- Montreal Clinical Research Institute (IRCM), Montréal, Canada
- Molecular Biology Programs, Université de Montréal, Montréal, Canada
| | - Olivier Pertz
- Institute of Cell Biology, University of Bern, Bern, Switzerland
| | - Matthias Peter
- Institute of Biochemistry, Department of Biology, ETH Zürich, Zürich, Switzerland
| |
Collapse
|
2
|
Xie S, Li G. A key to unlock ubiquitin ligase function. Nat Chem Biol 2024; 20:1098-1099. [PMID: 38773329 DOI: 10.1038/s41589-024-01591-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Affiliation(s)
- Shaoshuai Xie
- Institute of Systems and Physical Biology, Shenzhen Bay Laboratory, Shenzhen, China
| | - Gang Li
- Institute of Systems and Physical Biology, Shenzhen Bay Laboratory, Shenzhen, China.
| |
Collapse
|