PRDM1

PR domain zinc finger protein 1 also known as BLIMP-1 is a protein that in humans is encoded by the PRDM1 gene.[5][6] BLIMP-1 acts as a repressor of beta-interferon (β-IFN) gene expression. The protein binds specifically to the PRDI (positive regulatory domain I element) of the β-IFN gene promoter. Transcription of this gene increases upon virus induction.[6]

PRDM1
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesPRDM1, BLIMP1, PRDI-BF1, PR domain 1, PR/SET domain 1
External IDsOMIM: 603423 MGI: 99655 HomoloGene: 925 GeneCards: PRDM1
Gene location (Human)
Chr.Chromosome 6 (human)[1]
Band6q21Start105,993,463 bp[1]
End106,109,939 bp[1]
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez

639

12142

Ensembl

ENSG00000057657

ENSMUSG00000038151

UniProt

O75626

Q60636

RefSeq (mRNA)

NM_001198
NM_182907

NM_007548

RefSeq (protein)

NP_001189
NP_878911

NP_031574

Location (UCSC)Chr 6: 105.99 – 106.11 MbChr 10: 44.44 – 44.53 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Function

The increased expression of the Blimp-1 protein in B lymphocytes, T lymphocytes, NK cell and other immune system cells leads to an immune response through proliferation and differentiation of antibody secreting plasma cells. Blimp-1 is also considered a 'master regulator' of hematopoietic stem cells.[7][8]

Blimp1 (also known as Prdm1), a known transcriptional repressor, has a critical role in the foundation of the mouse germ cell lineage, as its disruption causes a block early in the process of primordial germ cell formation. Blimp1-deficient mutant embryos form a tight cluster of about 20 primordial germ cell-like cells, which fail to show the characteristic migration, proliferation and consistent repression of homeobox genes that normally accompany specification of primordial germ cells. The genetic lineage-tracing experiments indicate that the Blimp1-positive cells originating from the proximal posterior epiblast cells are indeed the lineage-restricted primordial germ cell precursors.[9]

Second cancers after radiation treatment

A genome-wide association study has identified two genetic variations near the PRDM1 gene that predict an increased likelihood of developing a second cancer after radiation treatment for Hodgkin lymphoma.[10]

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References

  1. GRCh38: Ensembl release 89: ENSG00000057657 - Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000038151 - Ensembl, 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. Keller AD, Maniatis T (May 1991). "Identification and characterization of a novel repressor of beta-interferon gene expression". Genes & Development. 5 (5): 868–79. doi:10.1101/gad.5.5.868. PMID 1851123.
  6. "Entrez Gene: PRDM1 PR domain containing 1, with ZNF domain".
  7. Turner CA, Mack DH, Davis MM (Apr 1994). "Blimp-1, a novel zinc finger-containing protein that can drive the maturation of B lymphocytes into immunoglobulin-secreting cells". Cell. 77 (2): 297–306. doi:10.1016/0092-8674(94)90321-2. PMID 8168136.
  8. Sciammas R, Davis MM (May 2004). "Modular nature of Blimp-1 in the regulation of gene expression during B cell maturation". Journal of Immunology. 172 (9): 5427–40. doi:10.4049/jimmunol.172.9.5427. PMID 15100284.
  9. Ohinata Y, Payer B, O'Carroll D, Ancelin K, Ono Y, Sano M, Barton SC, Obukhanych T, Nussenzweig M, Tarakhovsky A, Saitou M, Surani MA (Jul 2005). "Blimp1 is a critical determinant of the germ cell lineage in mice". Nature. 436 (7048): 207–213. doi:10.1038/nature03813. PMID 15937476.
  10. Best T, Li D, Skol AD, Kirchhoff T, Jackson SA, Yasui Y, Bhatia S, Strong LC, Domchek SM, Nathanson KL, Olopade OI, Huang RS, Mack TM, Conti DV, Offit K, Cozen W, Robison LL, Onel K (Aug 2011). "Variants at 6q21 implicate PRDM1 in the etiology of therapy-induced second malignancies after Hodgkin's lymphoma". Nature Medicine. 17 (8): 941–3. doi:10.1038/nm.2407. PMC 3229923. PMID 21785431. Lay summary University of Chicago Medical Center.

Further reading

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