Protein: Partner and localizer of BRCA2 (Q3U0P1)
Organism: Mus musculus (Mouse)
Function: Plays a critical role in homologous recombination repair (HRR) through its ability to recruit BRCA2 and RAD51 to DNA breaks. Strongly stimulates the DNA strand-invasion activity of RAD51, stabilizes the nucleoprotein filament against a disruptive BRC3-BRC4 polypeptide and helps RAD51 to overcome the suppressive effect of replication protein A (RPA). Functionally cooperates with RAD51AP1 in promoting of D-loop formation by RAD51. Serves as the molecular scaffold in the formation of the BRCA1-PALB2-BRCA2 complex which is essential for homologous recombination. Via its WD repeats is proposed to scaffold a HR complex containing RAD51C and BRCA2 which is thought to play a role in HR-mediated DNA repair. Essential partner of BRCA2 that promotes the localization and stability of BRCA2. Also enables its recombinational repair and checkpoint functions of BRCA2. May act by promoting stable association of BRCA2 with nuclear structures, allowing BRCA2 to escape the effects of proteasome-mediated degradation. Binds DNA with high affinity for D loop, which comprises single-stranded, double-stranded and branched DNA structures. May play a role in the extension step after strand invasion at replication-dependent DNA double-strand breaks; together with BRCA2 is involved in both POLH localization at collapsed replication forks and DNA polymerization activity (By similarity).
Subcellular location: Nucleus {ECO:0000250|UniProtKB:Q86YC2}. Note=Colocalizes with BRCA2 in nuclear foci. {ECO:0000250|UniProtKB:Q86YC2}.
Sequence: MEELSGKPLSYAEKEKLKEKLAFLKKEYSRTLARLQRAKRAEKAKNSKKAIEDGVPQPEASSQLSHSESINKGFPCDTLQSNHLDEETGENISQILDVEPQSFNCKQGKEVLHTPRAGDIQGQLLHSTSSPDGKKEQNTLPGTTKTPWEKSSVSQEKEDYFDTNSLALLGKHRKGQESISRKNSRTPVSEKTHLLSLRSQIPDPPALVTGIGEGILIPPSGKSERGIDTLVRGNTVSAEAAVPSCTASNSNHSQHLEHTPPKSGCKITTQGPASSTNLVAQDQKMTIFTVNSVVYKAVRAHGQLPGSPNSCSVNDLTHSNLPANSTPNSKSLKSPSNTVDERNEPLQEDEILGPSKNFNLAAVSPPSTESQIHSCTMLEGLLFPAEYYVRTTRRMSDCQRKIALEAVIQSHLGVKKKELKKKTKATKAVVLSSEDTDQSESGMLDTSTGQSSSGSLSQKLLSPAEVSSPPGPAGKATTPPPGRGHRGKRKSARTSTLGHCQLLFPPCAALAVNRSKGKFTKHKCQNRGVVIHDFELPDEDFGLLKLEKLKSCSEKLIESPDSKNCGERLPREGNHAALEELQRDSETEGLEEELTVPPGEAYRPGPTLRRQPGSKDLSSSIVLFTPADTAAPNDSGRPPPSLCSPAFPILGMTPALGSQAAGETLSTEAAQPCSTSQPPLLGDTNSLVNNSKQCNSSACSPKPDTNLQASGRQGQPACDSDSGPQATPLPVESFTFRENQLCGNACLELHEHSTEQTETADRPACDNLNPGNLQLVSELKNPSSSCSVDVSAMWWERAGAKEPCIVTACEDVVSLWKPLNSLQWEKVHTWHFTEVPVLQIVPVPDVYNLICVALGSLEIREIRALLCSSGDDSEKQVLLKSGDIKAMLGLTKRRLVSSTGTFCNQQIQIMTFADDGSSKDEQLLMPPDETVLTFAEVQGTQEALLGTTTVNSIVIWNLKTGQLLKKMHIDDSYQASVCHGAYSEKGLLFVVVSQPCAKESQALGSPVFQLLVINPKTAQSVGVLLCSLPQGQAGRFLEGDVKDHVAAAVLTSGTIAIWDLLLGHCTALLPPVSDQSWSLVKWSGTDSHLLAGQKDGNIFIYRYF
InterPro domains: - IPR031920: Partner and localiser of BRCA2, WD40 domain (domain) [758-1102]
- IPR015943: WD40/YVTN repeat-like-containing domain superfamily (homologous_superfamily) [772-1104]
- IPR036322: WD40-repeat-containing domain superfamily (homologous_superfamily) [774-1102]
- IPR042417: Partner and localizer of BRCA2 (family) [530-1102]
Interaction partners: - Breast cancer type 1 susceptibility protein homolog
- Breast cancer type 2 susceptibility protein homolog
- DNA repair protein RAD51 homolog 3
- DNA repair protein RAD51 homolog 1
- Fanconi anemia group J protein homolog
- Kelch-like ECH-associated protein 1
- Fanconi anemia group D2 protein homolog
- BRCA1-associated RING domain protein 1
- Large ribosomal subunit protein bL21m
- E3 ubiquitin-protein ligase RNF168
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0050896 (response to stimulus), GO:0051716 (cellular response to stimulus), GO:0006950 (response to stress), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0044238 (primary metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0006725 (cellular aromatic compound metabolic process), GO:1901360 (organic cyclic compound metabolic process), GO:0034641 (cellular nitrogen compound metabolic process), GO:0006139 (nucleobase-containing compound metabolic process), GO:0044260 (cellular macromolecule metabolic process), GO:0043170 (macromolecule metabolic process), GO:0046483 (heterocycle metabolic process), GO:0033554 (cellular response to stress), GO:0006259 (DNA metabolic process), GO:0090304 (nucleic acid metabolic process), GO:0006974 (cellular response to DNA damage stimulus), GO:0006310 (DNA recombination), GO:0006281 (DNA repair), GO:0000725 (recombinational repair), GO:0006302 (double-strand break repair), GO:0000724 (double-strand break repair via homologous recombination)
Cellular Component (CC): GO:0005575 (cellular component), GO:0032991 (protein-containing complex), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:1902494 (catalytic complex), GO:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0043233 (organelle lumen), GO:1990391 (DNA repair complex), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0031981 (nuclear lumen), GO:0005634 (nucleus)