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Overview

Uniprot IDQ6UWZ7
Protein NameBRCA1-A complex subunit Abraxas 1
Gene NameABRAXAS1
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
347 TPQIIKHKALDLDDR
368 RLLDTQDKRSKADTG

Function

Involved in DNA damage response and double-strand break (DSB) repair. Component of the BRCA1-A complex, acting as a central scaffold protein that assembles the various components of the complex and mediates the recruitment of BRCA1. The BRCA1-A complex specifically recognizes 'Lys-63'-linked ubiquitinated histones H2A and H2AX at DNA lesion sites, leading to target the BRCA1-BARD1 heterodimer to sites of DNA damage at DSBs. This complex also possesses deubiquitinase activity that specifically removes 'Lys-63'-linked ubiquitin on histones H2A and H2AX

Protein Sequence

10 MEGESTSAVL 20 SGFVLGALAF 30 QHLNTDSDTE 40 GFLLGEVKGE 50 AKNSITDSQM 60 DDVEVVYTID 70 IQKYIPCYQL 80 FSFYNSSGEV 90 NEQALKKILS 100 NVKKNVVGWY 110 KFRRHSDQIM 120 TFRERLLHKN 130 LQEHFSNQDL 140 VFLLLTPSII 150 TESCSTHRLE 160 HSLYKPQKGL 170 FHRVPLVVAN 180 LGMSEQLGYK 190 TVSGSCMSTG 200 FSRAVQTHSS 210 KFFEEDGSLK 220 EVHKINEMYA 230 SLQEELKSIC 240 KKVEDSEQAV 250 DKLVKDVNRL 260 KREIEKRRGA 270 QIQAAREKNI 280 QKDPQENIFL 290 CQALRTFFPN 300 SEFLHSCVMS 310 LKNRHVSKSS 320 CNYNHHLDVV 330 DNLTLMVEHT 340 DIPEASPAST 350 PQIIKHKALD 360 LDDRWQFKRS 370 RLLDTQDKRS 380 KADTGSSNQD 390 KASKMSSPET 400 DEEIEKMKGF GEYSRSPTF

Gene Ontology

Classification GO ID Description
Cellular Component GO:0070531 BRCA1-A complex
Cellular Component GO:0016604 nuclear body
Cellular Component GO:0005654 nucleoplasm
Cellular Component GO:0005634 nucleus
Molecular Function GO:0008017 microtubule binding
Molecular Function GO:0031593 polyubiquitin modification-dependent protein binding
Biological Process GO:0008608 attachment of spindle microtubules to kinetochore
Biological Process GO:0006325 chromatin organization
Biological Process GO:0006302 double-strand break repair
Biological Process GO:0007095 mitotic G2 DNA damage checkpoint signaling
Biological Process GO:0044818 mitotic G2/M transition checkpoint
Biological Process GO:0090307 mitotic spindle assembly
Biological Process GO:0045739 positive regulation of DNA repair
Biological Process GO:0006282 regulation of DNA repair
Biological Process GO:0010212 response to ionizing radiation

Reference

PMID: N/A