Journal
SCIENCE
Volume 316, Issue 5828, Pages 1202-1205Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1139621
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- NCI NIH HHS [R01CA089239] Funding Source: Medline
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Mutations in the breast cancer susceptibility gene 1 (BRCA1) are associated with an increased risk of breast and ovarian cancers. BRCA1 participates in the cellular DNA damage response. We report the identification of receptor-associated protein 80 (RAP80) as a BRCA1-interacting protein in humans. RAP80 contains a tandem ubiquitin-interacting motif domain, which is required for its binding with ubiquitin in vitro and its damage-induced foci formation in vivo. Moreover, RAP80 specifically recruits BRCA1 to DNA damage sites and functions with BRCA1 in G(2)/M checkpoint control. Together, these results suggest the existence of a ubiquitination-dependent signaling pathway involved in the DNA damage response.
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