ABRO1 stabilizes the deubiquitinase BRCC3 through inhibiting its degradation mediated by the E3 ubiquitin ligase WWP2.
FEBS Lett
; 595(2): 169-182, 2021 01.
Article
in En
| MEDLINE
| ID: mdl-33107021
ABSTRACT
BRCA1/BRCA2-containing complex subunit 3 (BRCC3) is a lysine 63-specific deubiquitinase involved in multiple biological processes, such as DNA repair and immune responses. However, the regulation mechanism for BRCC3 protein stability is still unknown. Here, we demonstrate that BRCC3 is mainly degraded through the ubiquitin-proteasome pathway. The HECT-type E3 ubiquitin ligase WWP2 modulates BRCC3 ubiquitination and degradation. ABRO1, a subunit of the BRCC36 isopeptidase complex (BRISC), competes with WWP2 to bind to BRCC3, thereby preventing WWP2-mediated BRCC3 ubiquitination and enhancing BRCC3 stability. Functionally, we show that lentivirus-mediated overexpression of WWP2 in murine macrophages inhibits NLRP3 inflammasome activation by decreasing BRCC3 protein level. This study provides the first insights into the regulation of BRCC3 stability and expands our knowledge about the physiological function of WWP2.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Nuclear Matrix-Associated Proteins
/
Ubiquitin-Protein Ligases
/
Ubiquitin-Specific Proteases
/
Deubiquitinating Enzymes
Limits:
Animals
/
Humans
Language:
En
Journal:
FEBS Lett
Year:
2021
Document type:
Article
Affiliation country:
China