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Deubiquitinating enzyme that plays a key role in chromatin by mediating deubiquitination of histone H2A and HCFC1. Catalytic component of the PR-DUB complex, a complex that specifically mediates deubiquitination of histone H2A monoubiquitinated at 'Lys-119' (H2AK119ub1). Does not deubiquitinate monoubiquitinated histone H2B. Acts as a regulator of cell growth by mediating deubiquitination of HCFC1 N-terminal and C-terminal chains, with some specificity toward 'Lys-48'-linked polyubiquitin chains compared to 'Lys-63'-linked polyubiquitin chains. Deubiquitination of HCFC1 does not lead to increase stability of HCFC1. Interferes with the BRCA1 and BARD1 heterodimer activity by inhibiting their ability to mediate ubiquitination and autoubiquitination. It however does not mediate deubiquitination of BRCA1 and BARD1. Able to mediate autodeubiquitination via intramolecular interactions to couteract monoubiquitination at the nuclear localization signal (NLS), thereby protecting it from cytoplasmic sequestration (PubMed:24703950). Acts as a tumor suppressor.
Gene Name: | BRCA1 associated protein-1 (ubiquitin carboxy-terminal hydrolase) |
Family/Subfamily: | Protease , Cysteine C12 |
Synonyms: | BAP1, BRCA1 binding protein BAP1, Cerebral protein 6, Hucep-6, UCHL2, BRCA1-associated protein 1, Cerebral protein-13, HUCEP-13, KIAA0272, TPDS |
Target Sequences: | NM_004656 NP_004647.1 Q92560 |
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