BABA1_XENLA
ID BABA1_XENLA Reviewed; 328 AA.
AC Q6DJG6;
DT 29-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT 16-AUG-2004, sequence version 1.
DT 03-AUG-2022, entry version 61.
DE RecName: Full=BRISC and BRCA1-A complex member 1;
DE AltName: Full=Mediator of RAP80 interactions and targeting subunit of 40 kDa;
DE AltName: Full=New component of the BRCA1-A complex;
GN Name=babam1; Synonyms=merit40, nba1;
OS Xenopus laevis (African clawed frog).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Xenopus.
OX NCBI_TaxID=8355;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Eye;
RG NIH - Xenopus Gene Collection (XGC) project;
RL Submitted (JUN-2004) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Component of the BRCA1-A complex, a complex that specifically
CC recognizes 'Lys-63'-linked ubiquitinated histones H2A and H2AX at DNA
CC lesions sites, leading to target the BRCA1-BARD1 heterodimer to sites
CC of DNA damage at double-strand breaks (DSBs). The BRCA1-A complex also
CC possesses deubiquitinase activity that specifically removes 'Lys-63'-
CC linked ubiquitin on histones H2A and H2AX. In the BRCA1-A complex, it
CC is required for the complex integrity and its localization at DSBs.
CC Component of the BRISC complex, a multiprotein complex that
CC specifically cleaves 'Lys-63'-linked ubiquitin in various substrates.
CC In these 2 complexes, it is probably required to maintain the stability
CC of babam2 and help the 'Lys-63'-linked deubiquitinase activity mediated
CC by brcc3/brcc36 component. The BRISC complex is required for normal
CC mitotic spindle assembly and microtubule attachment to kinetochores via
CC its role in deubiquitinating numa1. Plays a role in interferon
CC signaling via its role in the deubiquitination of the interferon
CC receptor ifnar1; deubiquitination increases ifnar1 activity by
CC enhancing its stability and cell surface expression. Down-regulates the
CC response to bacterial lipopolysaccharide (LPS) via its role in ifnar1
CC deubiquitination. {ECO:0000250|UniProtKB:Q9NWV8}.
CC -!- SUBUNIT: Component of the ARISC complex, at least composed of
CC uimc1/rap80, abraxas1, brcc3/brcc36, BABAM2 and babam1/nba1. Component
CC of the BRCA1-A complex, at least composed of brca1, bard1, uimc1/rap80,
CC abraxas1, brcc3/brcc36, BABAM2 and babam1/nba1. In the BRCA1-A complex,
CC interacts directly with abraxas1 and BABAM2. Component of the BRISC
CC complex, at least composed of abraxas2, brcc3/brcc36, babam2 and
CC babam1/nba1. {ECO:0000250|UniProtKB:Q9NWV8}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250|UniProtKB:Q9NWV8}. Nucleus
CC {ECO:0000250|UniProtKB:Q9NWV8}. Note=Localizes at sites of DNA damage
CC at double-strand breaks (DSBs). {ECO:0000250|UniProtKB:Q9NWV8}.
CC -!- DOMAIN: The VWFA-like region is similar to the VWFA domain. Its
CC presence reveals similarities between the structure of the 19S
CC proteasome and the BRCA1-A complexes. {ECO:0000250|UniProtKB:Q9NWV8}.
CC -!- SIMILARITY: Belongs to the BABAM1 family. {ECO:0000305}.
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DR EMBL; BC075213; AAH75213.1; -; mRNA.
DR RefSeq; NP_001086385.1; NM_001092916.1.
DR RefSeq; XP_018101334.1; XM_018245845.1.
DR AlphaFoldDB; Q6DJG6; -.
DR SMR; Q6DJG6; -.
DR MaxQB; Q6DJG6; -.
DR DNASU; 444814; -.
DR GeneID; 444814; -.
DR KEGG; xla:444814; -.
DR CTD; 444814; -.
DR Xenbase; XB-GENE-5731110; babam1.L.
DR OMA; QCTPFKL; -.
DR OrthoDB; 1583424at2759; -.
DR Proteomes; UP000186698; Chromosome 1L.
DR Bgee; 444814; Expressed in testis and 19 other tissues.
DR GO; GO:0070531; C:BRCA1-A complex; ISS:UniProtKB.
DR GO; GO:0070552; C:BRISC complex; ISS:UniProtKB.
DR GO; GO:0005737; C:cytoplasm; ISS:UniProtKB.
DR GO; GO:0005634; C:nucleus; ISS:UniProtKB.
DR GO; GO:0051301; P:cell division; IEA:UniProtKB-KW.
DR GO; GO:0006325; P:chromatin organization; IEA:UniProtKB-KW.
DR GO; GO:0006302; P:double-strand break repair; ISS:UniProtKB.
DR GO; GO:0007095; P:mitotic G2 DNA damage checkpoint signaling; ISS:UniProtKB.
DR GO; GO:0045739; P:positive regulation of DNA repair; ISS:UniProtKB.
DR GO; GO:0070536; P:protein K63-linked deubiquitination; ISS:UniProtKB.
DR GO; GO:0010212; P:response to ionizing radiation; ISS:UniProtKB.
DR Gene3D; 3.40.50.410; -; 1.
DR InterPro; IPR026126; BABAM1.
DR InterPro; IPR036465; vWFA_dom_sf.
DR PANTHER; PTHR15660; PTHR15660; 1.
DR SUPFAM; SSF53300; SSF53300; 1.
PE 2: Evidence at transcript level;
KW Cell cycle; Cell division; Chromatin regulator; Cytoplasm; DNA damage;
KW DNA repair; Mitosis; Nucleus; Reference proteome; Ubl conjugation pathway.
FT CHAIN 1..328
FT /note="BRISC and BRCA1-A complex member 1"
FT /id="PRO_0000288462"
FT REGION 1..84
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 96..297
FT /note="VWFA-like"
FT COMPBIAS 17..38
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 63..82
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 328 AA; 36953 MW; 8AE81CE0F65D054A CRC64;
MDNSTEETFS MDTSEPLEEG EQTHEQRPHT RSNPEGAEDR GVVHQAGVGS RSEGEGEAAQ
VEDPLPTTTT VPTNSTPPPT LEFQLKTPRV NCPEKVIICL DLSEEMSTQK LESFNGSKAN
ALNSSQKMIE MFVRTKHKID KRHEFALVVA NNEAMWLSGF TSDPREVCSC LYDLETNVCE
SFNLEGLFNL IQQRTEFPVT DNVQTIPPPY VVRIILIYSR PASQPALALT DNMKKMLQCP
YFFFDVIYIH NGSEEEELCW KDIFGFFSSL DSKGTSYKYE VSITGPALEL HNCMARLLAH
PLQRPFQSHA AYSLLEEEEE SPESEVTV
