BRCA1-A complex subunit MERIT40 is a protein that in humans is encoded by the BABAM1 gene.[5][6]

BABAM1
Identifiers
AliasesBABAM1, C19orf62, MERIT40, NBA1, HSPC142, BRISC and BRCA1 A complex member 1
External IDsOMIM: 612766; MGI: 1915501; HomoloGene: 8574; GeneCards: BABAM1; OMA:BABAM1 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_014173
NM_001033549
NM_001288756
NM_001288757

NM_026636

RefSeq (protein)

NP_001028721
NP_001275685
NP_001275686
NP_054892

NP_080912

Location (UCSC)Chr 19: 17.27 – 17.28 MbChr 8: 71.85 – 71.86 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Interactions

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BABAM1 has been shown to interact with BRE.[7][8]

Repair of DNA damage

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MERIT40, the protein product of the BABAM1 gene, is a core component of the deubiquitin complex BRCA1-A.[9] Other core components of the BRCA1-A complex are the BRCC36 protein (BRCC3 gene), BRE protein (BRE (gene)), and RAP80 protein (UIMC1 gene).[9] MERIT40 protein binds ubiquitin with high affinity.

BRCA1, as distinct from BRCA1-A, is employed in the repair of chromosomal damage with an important role in the error-free homologous recombinational (HR) repair of DNA double-strand breaks. Sequestration of BRCA1 away from the DNA damage site suppresses homologous recombination and redirects the cell in the direction of repair by the process of non-homologous end joining (NHEJ).[9] The role of BRCA1-A appears to be to bind BRCA1 with high affinity and withdraw it away from the site of DNA damage to the periphery where it remains sequestered, thus promoting NHEJ in preference to HR.

References

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  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000105393Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000031820Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Zhang QH, Ye M, Wu XY, Ren SX, Zhao M, Zhao CJ, Fu G, Shen Y, Fan HY, Lu G, Zhong M, Xu XR, Han ZG, Zhang JW, Tao J, Huang QH, Zhou J, Hu GX, Gu J, Chen SJ, Chen Z (Oct 2000). "Cloning and functional analysis of cDNAs with open reading frames for 300 previously undefined genes expressed in CD34+ hematopoietic stem/progenitor cells". Genome Research. 10 (10): 1546–60. doi:10.1101/gr.140200. PMC 310934. PMID 11042152.
  6. ^ "Entrez Gene: HSPC142 HSPC142 protein".
  7. ^ Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M, Ayivi-Guedehoussou N, Klitgord N, Simon C, Boxem M, Milstein S, Rosenberg J, Goldberg DS, Zhang LV, Wong SL, Franklin G, Li S, Albala JS, Lim J, Fraughton C, Llamosas E, Cevik S, Bex C, Lamesch P, Sikorski RS, Vandenhaute J, Zoghbi HY, Smolyar A, Bosak S, Sequerra R, Doucette-Stamm L, Cusick ME, Hill DE, Roth FP, Vidal M (Oct 2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. Bibcode:2005Natur.437.1173R. doi:10.1038/nature04209. PMID 16189514. S2CID 4427026.
  8. ^ Ewing RM, Chu P, Elisma F, Li H, Taylor P, Climie S, McBroom-Cerajewski L, Robinson MD, O'Connor L, Li M, Taylor R, Dharsee M, Ho Y, Heilbut A, Moore L, Zhang S, Ornatsky O, Bukhman YV, Ethier M, Sheng Y, Vasilescu J, Abu-Farha M, Lambert JP, Duewel HS, Stewart II, Kuehl B, Hogue K, Colwill K, Gladwish K, Muskat B, Kinach R, Adams SL, Moran MF, Morin GB, Topaloglou T, Figeys D (2007). "Large-scale mapping of human protein-protein interactions by mass spectrometry". Molecular Systems Biology. 3 (1): 89. doi:10.1038/msb4100134. PMC 1847948. PMID 17353931.
  9. ^ a b c Rabl J (October 2020). "BRCA1-A and BRISC: Multifunctional Molecular Machines for Ubiquitin Signaling". Biomolecules. 10 (11): 1503. doi:10.3390/biom10111503. PMC 7692841. PMID 33142801.
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Further reading

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