TAF1B

Last updated
TAF1B
Identifiers
Aliases TAF1B , MGC:9349, RAF1B, RAFI63, SL1, TAFI63, TATA-box binding protein associated factor, RNA polymerase I subunit B
External IDs OMIM: 604904; MGI: 109577; HomoloGene: 31331; GeneCards: TAF1B; OMA:TAF1B - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_005680
NM_001318976
NM_001318977

NM_020614

RefSeq (protein)

NP_001305905
NP_001305906
NP_005671

NP_065639

Location (UCSC) Chr 2: 9.84 – 9.93 Mb Chr 12: 24.55 – 24.61 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

TATA box-binding protein-associated factor RNA polymerase I subunit B is an enzyme that in humans is encoded by the TAF1B gene. [5] [6]

Contents

Function

Initiation of transcription by RNA polymerase I requires the formation of a complex composed of the TATA-binding protein (TBP) and three TBP-associated factors (TAFs) specific for RNA polymerase I. This complex, known as SL1, binds to the core promoter of ribosomal RNA genes to position the polymerase properly and acts as a channel for regulatory signals. This gene encodes one of the SL1-specific TAFs. [6]

Interactions

TAF1B has been shown to interact with RRN3. [7]

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000115750 Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000059669 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. Comai L, Zomerdijk JC, Beckmann H, Zhou S, Admon A, Tjian R (January 1995). "Reconstitution of transcription factor SL1: exclusive binding of TBP by SL1 or TFIID subunits". Science. 266 (5193): 1966–72. Bibcode:1994Sci...266.1966C. doi:10.1126/science.7801123. PMID   7801123.
  6. 1 2 "Entrez Gene: TAF1B TATA box binding protein (TBP)-associated factor, RNA polymerase I, B, 63kDa".
  7. Miller G, Panov KI, Friedrich JK, Trinkle-Mulcahy L, Lamond AI, Zomerdijk JC (March 2001). "hRRN3 is essential in the SL1-mediated recruitment of RNA Polymerase I to rRNA gene promoters". EMBO J. 20 (6): 1373–82. doi:10.1093/emboj/20.6.1373. PMC   145519 . PMID   11250903.

Further reading