NFX1

Nuclear transcription factor, X-box binding 1
Identifiers
SymbolsNFX1 ; NFX2; TEG-42; Tex42
External IDsOMIM: 603255 MGI: 1921414 HomoloGene: 1875 GeneCards: NFX1 Gene
EC number6.3.2.-
Orthologs
SpeciesHumanMouse
Entrez479974164
EnsemblENSG00000086102ENSMUSG00000028423
UniProtQ12986B1AY10
RefSeq (mRNA)NM_002504NM_001290448
RefSeq (protein)NP_002495NP_001277377
Location (UCSC)Chr 9:
33.29 – 33.37 Mb
Chr 4:
40.97 – 41.03 Mb
PubMed search

Transcriptional repressor NF-X1 is a protein that in humans is encoded by the NFX1 gene.[1][1][2][2][3]

MHC class II gene expression is controlled primarily at the transcriptional level by transcription factors that bind to the X and Y boxes, two highly conserved elements in the proximal promoter of MHC class II genes. The protein encoded by this gene is a transcriptional repressor capable of binding to the conserved X box motif of HLA-DRA and other MHC class II genes in vitro. The protein may play a role in regulating the duration of an inflammatory response by limiting the period in which class II MHC molecules are induced by IFN-γ. Three alternative splice variants, each of which encodes a different isoform, have been identified.[4]

References

  1. 1.0 1.1 Song Z, Krishna S, Thanos D, Strominger JL, Ono SJ (Dec 1994). "A novel cysteine-rich sequence-specific DNA-binding protein interacts with the conserved X-box motif of the human major histocompatibility complex class II genes via a repeated Cys-His domain and functions as a transcriptional repressor". J Exp Med 180 (5): 1763–74. doi:10.1084/jem.180.5.1763. PMC 2191754. PMID 7964459.
  2. 2.0 2.1 Hume CR, Lee JS (Jan 1990). "Congenital immunodeficiencies associated with absence of HLA class II antigens on lymphocytes result from distinct mutations in trans-acting factors". Hum Immunol 26 (4): 288–309. doi:10.1016/0198-8859(89)90007-4. PMID 2511169.
  3. Arlotta P, Miyazaki D, Copeland NG, Gilbert DJ, Jenkins NA, Ono SJ (June 2002). "Murine NFX.1: isolation and characterization of its messenger RNA, mapping of its chromosomal location and assessment of its developmental expression". Immunology 106 (2): 173–81. doi:10.1046/j.1365-2567.2002.01416.x. PMC 1782705. PMID 12047746.
  4. "Entrez Gene: NFX1 nuclear transcription factor, X-box binding 1".


Further reading

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