BRCA1 antibody
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Description
E3 ubiquitin-protein ligase that specifically mediates the formation of 'Lys-6'-linked polyubiquitin chains and plays a central role in DNA repair by facilitating cellular responses to DNA damage. It is unclear whether it also mediates the formation of other types of polyubiquitin chains. The E3 ubiquitin-protein ligase activity is required for its tumor suppressor function. The BRCA1-BARD1 heterodimer coordinates a diverse range of cellular pathways such as DNA damage repair, ubiquitination and transcriptional regulation to maintain genomic stability. Regulates centrosomal microtubule nucleation. Required for normal cell cycle progression from G2 to mitosis. Required for appropriate cell cycle arrests after ionizing irradiation in both the S-phase and the G2 phase of the cell cycle. Involved in transcriptional regulation of P21 in response to DNA damage. Required for FANCD2 targeting to sites of DNA damage. May function as a transcriptional regulator. Inhibits lipid synthesis by binding to inactive phosphorylated ACACA and preventing its dephosphorylation. Contributes to homologous recombination repair(HRR) via its direct interaction with PALB2, fine-tunes recombinational repair partly through its modulatory role in the PALB2-dependent loading of BRCA2-RAD51 repair machinery at DNA breaks. Component of the BRCA1-RBBP8 complex which regulates CHEK1 activation and controls cell cycle G2/M checkpoints on DNA damage via BRCA1-mediated ubiquitination of RBBP8. Acts as a transcriptional activator(PubMed:20160719).
Documents del producto
Product specifications
| Category | Primary Antibodies |
| Immunogen Target | breast cancer 1, early onset (BRCA1) |
| Host | Rabbit |
| Reactivity | Human |
| Recommended Dilution | WB: 1:500-1:2000; IHC: 1:20-1:200 |
| Clonality | polyclonal |
| Conjugation | Unconjugated |
| Isotype | IgG |
| Observed MW | 85-95 kDa |
| Purity | ≥95% as determined by SDS-PAGE |
| Purification | Immunogen affinity purified |
| Size 1 | 100µg |
| Form | liquid |
| Tested Applications | ELISA, IHC, WB |
| Storage | PBS with 0.02% sodium azide and 50% glycerol pH 7.3, -20℃ for 12 months(Avoid repeated freeze / thaw cycles.) |
| UniProt ID | P38398 |
| Gene ID | 672 |
| Alias | BRCAI,BRCC1,BROVCA1,FANCS IRIS,PNCA4,PPP1R53,PSCP,RNF53,RING finger protein 53 |
| Background | Antibody anti-BRCA1 |
| Status | RUO |
| Note | Mol. Weight 85-95 kDa |
Descripción
BRCA1 is a tumor suppressor protein that plays a central role in maintaining genomic stability through its involvement in DNA damage repair, cell cycle regulation, and transcriptional control. BRCA1 functions as part of the homologous recombination repair pathway, where it recognizes and repairs double-strand DNA breaks, ensuring genomic integrity during cell division. It forms complexes with other DNA repair proteins, including RAD51, BARD1, and BRCA2, to facilitate accurate repair processes. BRCA1 also regulates cell cycle checkpoints, particularly at the G2/M phase, to prevent the propagation of damaged DNA. It is widely expressed in proliferative tissues, including breast and ovarian tissue, where its loss or mutation is associated with increased susceptibility to breast, ovarian, and other cancers. Mutations in BRCA1 disrupt its DNA repair function, leading to chromosomal instability, accumulation of mutations, and tumorigenesis. BRCA1 also interacts with signaling pathways involved in apoptosis, transcriptional regulation, and immune response, further highlighting its multifaceted role in cellular homeostasis. Knockout studies reveal defective DNA repair, increased tumorigenesis, and impaired cell cycle control, underscoring BRCA1’s critical function in DNA repair, tumor suppression, and genomic stability.
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This gene encodes a nuclear phosphoprotein that plays a role in maintaining genomic stability, and it also acts as a tumor suppressor. The encoded protein combines with other tumor suppressors, DNA damage sensors, and signal transducers to form a large multi-subunit protein complex known as the BRCA1-associated genome surveillance complex (BASC). This gene product associates with RNA polymerase II, and through the C-terminal domain, also interacts with histone deacetylase complexes. This protein thus plays a role in transcription, DNA repair of double-stranded breaks, and recombination. Mutations in this gene are responsible for approximately 40% of inherited breast cancers and more than 80% of inherited breast and ovarian cancers. Alternative splicing plays a role in modulating the subcellular localization and physiological function of this gene. Many alternatively spliced transcript variants, some of which are disease-associated mutations, have been described for this gene, but the full-length natures of only some of these variants has been described. A related pseudogene, which is also located on chromosome 17, has been identified.
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