Component of the BRCA1-A complex, a complex that specifically recognizes 'Lys-63'-linked ubiquitinated histones H2A and H2AX at DNA lesions sites, leading to target the BRCA1-BARD1 heterodimer to sites of DNA damage at double-strand breaks (DSBs). The BRCA1-A complex also possesses deubiquitinase activity that specifically removes 'Lys-63'-linked ubiquitin on histones H2A and H2AX. In the BRCA1-A complex, it is required for the complex integrity and its localization at DSBs. Probably also plays a role as a component of the BRISC complex, a multiprotein complex that specifically cleaves 'Lys-63'-linked ubiquitin. In these 2 complexes, it is probably required to maintain the stability of BRE/BRCC45 and help the 'Lys-63'-linked deubiquitinase activity mediated by BRCC3/BRCC36. component (By similarity).
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Ewing, Chu, Elisma, Li, Taylor, Climie, McBroom-Cerajewski, Robinson, OConnor, Li, Taylor, Dharsee, Ho, Heilbut, Moore, Zhang, Ornatsky, Bukhman, Ethier, Sheng, Vasilescu, Abu-Farha, Lambert, Duewel et al.: "Large-scale mapping of human protein-protein interactions by mass spectrometry. ..." in: Molecular systems biology, Vol. 3, pp. 89, (2007) (PubMed).
Synonyms and alternative names related to BRISC and BRCA1 A Complex Member 1
BRISC and BRCA1 A complex member 1 (babam1), BRISC and BRCA1 A complex member 1 (BABAM1), BRISC and BRCA1 A complex member 1 L homeolog (babam1.L), BRISC and BRCA1 A complex member 1 (Babam1), 5430437P03Rik, C7H19orf62, c19orf62, C19orf62, merit40, MERIT40, Merit40, nba1, NBA1, zgc:100909
Protein level used designations for BRISC and BRCA1 A Complex Member 1
BRCA1-A complex subunit MERIT40
BRISC and BRCA1-A complex member 1
mediator of RAP80 interactions and targeting subunit of 40 kDa
new component of the BRCA1-A complex
mediator of Rap80 interactions and targeting 40 kDa