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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
Gene location (Human)
Chr.	Chromosome 2 (human)
End	9,934,416 bp
Gene location (Mouse)
Chr.	Chromosome 12 (mouse)
End	24,608,538 bp
RNA expression pattern
	Top expressed in
	testicle; ; gonad; ; Achilles tendon; ; buccal mucosa cell; ; ventricular zone; ; monocyte; ; islet of Langerhans; ; stromal cell of endometrium; ; secondary oocyte; ; olfactory zone of nasal mucosa;
	Top expressed in
	spermatocyte; ; zygote; ; secondary oocyte; ; seminiferous tubule; ; yolk sac; ; tail of embryo; ; dentate gyrus of hippocampal formation granule cell; ; morula; ; morula; ; genital tubercle;
	More reference expression data
	; ;
	More reference expression data
Gene ontology
Molecular function	DNA binding; DNA-binding transcription factor activity; metal ion binding; protein binding; TBP-class protein binding; RNA polymerase I core promoter sequence-specific DNA binding;
Cellular component	nucleoplasm; RNA polymerase transcription factor SL1 complex; nucleolus; nucleus; RNA polymerase I core factor complex;
Biological process	termination of RNA polymerase I transcription; epigenetic maintenance of chromatin in transcription-competent conformation; regulation of transcription, DNA-templated; transcription initiation from RNA polymerase I promoter; transcription, DNA-templated; transcription by RNA polymerase I; RNA polymerase I preinitiation complex assembly; nucleolar large rRNA transcription by RNA polymerase I; transcription elongation from RNA polymerase I promoter;
	Sources:Amigo / QuickGO
Orthologs
	9014
	21340
	ENSG00000115750
	ENSMUSG00000059669
	Q53T94
	P97358
	NM_005680; NM_001318976; NM_001318977
	NM_020614
	NP_001305905; NP_001305906; NP_005671
	NP_065639
	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]

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

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000115750 – Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000059669 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ 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.
^ ^a ^b "Entrez Gene: TAF1B TATA box binding protein (TBP)-associated factor, RNA polymerase I, B, 63kDa".
^ 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.

Di Pietro C, Rapisarda A, Amico V, Bonaiuto C, Viola A, Scalia M, Motta S, Amato A, Engel H, Messina A, Sichel G, Grzeschik K, Purrello M (2000). "Genomic localization of the human genes TAF1A, TAF1B and TAF1C, encoding TAF(I)48, TAF(I)63 and TAF(I)110 subunits of class I general transcription initiation factor SL1". Cytogenet. Cell Genet. 89 (1–2): 133–6. doi:10.1159/000015592. PMID 10894955. S2CID 27014629.
Zhai W, Comai L (2000). "Repression of RNA polymerase I transcription by the tumor suppressor p53". Mol. Cell. Biol. 20 (16): 5930–8. doi:10.1128/MCB.20.16.5930-5938.2000. PMC 86070. PMID 10913176.
Miller G, Panov KI, Friedrich JK, Trinkle-Mulcahy L, Lamond AI, Zomerdijk JC (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.
Kim NG, Rhee H, Li LS, Kim H, Lee JS, Kim JH, Kim NK, Kim H (2002). "Identification of MARCKS, FLJ11383 and TAF1B as putative novel target genes in colorectal carcinomas with microsatellite instability". Oncogene. 21 (33): 5081–7. doi:10.1038/sj.onc.1205703. PMID 12140758.
Yuan X, Zhao J, Zentgraf H, Hoffmann-Rohrer U, Grummt I (2002). "Multiple interactions between RNA polymerase I, TIF-IA and TAF(I) subunits regulate preinitiation complex assembly at the ribosomal gene promoter". EMBO Rep. 3 (11): 1082–7. doi:10.1093/embo-reports/kvf212. PMC 1307603. PMID 12393749.
Grandori C, Gomez-Roman N, Felton-Edkins ZA, Ngouenet C, Galloway DA, Eisenman RN, White RJ (2005). "c-Myc binds to human ribosomal DNA and stimulates transcription of rRNA genes by RNA polymerase I". Nat. Cell Biol. 7 (3): 311–8. doi:10.1038/ncb1224. PMID 15723054. S2CID 8913931.
You KT, Li LS, Kim NG, Kang HJ, Koh KH, Chwae YJ, Kim KM, Kim YK, Park SM, Jang SK, Kim H (2007). "Selective translational repression of truncated proteins from frameshift mutation-derived mRNAs in tumors". PLOS Biol. 5 (5): e109. doi:10.1371/journal.pbio.0050109. PMC 1854916. PMID 17456004.

This article on a gene on human chromosome 2 is a stub. You can help Wikipedia by expanding it.

[refGRCh38Ensembl-1] GRCh38: Ensembl release 89: ENSG00000115750 – Ensembl, May 2017

[refGRCm38Ensembl-2] 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.

[pmid7801123-5] 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.

[entrez-6] "Entrez Gene: TAF1B TATA box binding protein (TBP)-associated factor, RNA polymerase I, B, 63kDa".

[pmid11250903-7] 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.

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TAF1B

Function

Interactions

References

Further reading