Eukaryotic Transcription Initiation (Mus musculus)

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1, 25'3'5'5'3'TFIIF3'5'cell growthRNA polymerase I5'Steps 2) Association of TIFs and RNA polymeraseTFIIETFIIH3'Gene Regulatory Proteins(mRNA, snRNPs)RNA pol IITFIIA(recognize surface DNA geometry)TFIIA3'proteinTFIIBTFIIE5'TATARNA polymerase III5'(small stable RNAs)TATATFIIH(large ribosomal RNAs)3'3'dsDNASteps 1) TBP binds TATA boxTranscription Initiation Factors (TIFs)TFIID5'TATATATA Box bindingPrimary RNA transcriptSteps 3) DNA melting by association with TFIIHRNA polymerase II3'5'TFIIB5'Steps 4) Transcription elongation by NTPsTFIIFSteps 5) RNA elongation with CDT phosphorylation3'TFIIDGtf2e1Cdk7Polr2jPolr3dGtf2h1IlkCcnhPolr2cGtf2a2Gtf2h3TbpPolr2eGtf2f2Ercc2Gtf2h2Polr3eRpo1-1Polr2hRpo1-4Polr2gPolr2bTaf12Mnat1Polr2kGtf2h4Taf7Taf13Polr2iGtf2bTaf9Polr3bPolr3kRpo1-2Ercc3Polr2aRpo1-3Polr2fTaf5Polr3hTaf6Gtf2e2TFIIF


In eukaryotes, RNA polymerase, and therefore the initiation of transcription, requires the presence of a core promoter sequence in the DNA. RNA polymerase is able to bind to core promoters in the presence of various specific transcription factors. The most common type of core promoter in eukaryotes is a short DNA sequence known as a TATA box. The TATA box, as a core promoter, is the binding site for a transcription factor known as TATA binding protein (TBP), which is itself a subunit of another transcription factor, called Transcription Factor II D (TFIID). After TFIID binds to the TATA box via the TBP, five more transcription factors and RNA polymerase combine around the TATA box in a series of stages to form a preinitiation complex. One transcription factor, DNA helicase, has helicase activity and so is involved in the separating of opposing strands of double-stranded DNA to provide access to a single-stranded DNA template. However, only a low, or basal, rate of transcription is driven by the preinitiation complex alone. Other proteins known as activators and repressors, along with any associated coactivators or corepressors, are responsible for modulating transcription rate. Source: Wikipedia


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  1. Lee TI, Young RA; ''Regulation of gene expression by TBP-associated proteins.''; Genes Dev, 1998 PubMed Europe PMC Scholia
  2. Lemon B, Tjian R; ''Orchestrated response: a symphony of transcription factors for gene control.''; Genes Dev, 2000 PubMed Europe PMC Scholia


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89957view18:07, 6 October 2016Mkutmonfix unconnected lines
69915view19:37, 11 July 2013Mkutmonfixed unconnected lines
69137view18:16, 8 July 2013MaintBotUpdated to 2013 gpml schema
67216view10:22, 26 June 2013Christine ChichesterOntology Term : 'transcription pathway' added !
41326view00:25, 2 March 2011MaintBotRemoved redundant pathway information and comments
35533view14:04, 12 February 2010Thomasadded literature
35522view13:53, 12 February 2010ThomasModified description
34504view23:33, 16 December 2009KhanspersAdded connectors
26591view18:28, 10 December 2008AlexanderPico
21874view11:32, 14 November 2008MaintBot[[Pathway:Mus musculus:RNA transcription Reactome]] moved to [[Pathway:WP567]]: Moved to stable identifier
8368view13:46, 7 January 2008MaintBot[[Pathway:Mouse:RNA transcription Reactome]] moved to [[Pathway:Mus musculus:RNA transcription Reactome]]: Renaming species
7802view16:18, 18 December 2007MaintBotfixed category names
7287view12:41, 4 November 2007MaintBotAdded categories to GPML
6489view22:19, 22 May 2007Nsalomonisgpml file for [[Mouse:RNA_transcription_Reactome]]

External references


View all...
NameTypeDatabase referenceComment
CcnhGeneProduct66671 (Entrez Gene)
Cdk7GeneProduct12572 (Entrez Gene)
Ercc2GeneProduct13871 (Entrez Gene)
Ercc3GeneProduct13872 (Entrez Gene)
Gtf2a2GeneProduct235459 (Entrez Gene)
Gtf2bGeneProduct229906 (Entrez Gene)
Gtf2e1GeneProduct74197 (Entrez Gene)
Gtf2e2GeneProduct68153 (Entrez Gene)
Gtf2f2GeneProduct68705 (Entrez Gene)
Gtf2h1GeneProduct14884 (Entrez Gene)
Gtf2h2GeneProduct23894 (Entrez Gene)
Gtf2h3GeneProduct209357 (Entrez Gene)
Gtf2h4GeneProduct14885 (Entrez Gene)
IlkGeneProduct16202 (Entrez Gene)
Mnat1GeneProduct17420 (Entrez Gene)
Polr2aGeneProduct20020 (Entrez Gene)
Polr2bGeneProduct231329 (Entrez Gene)
Polr2cGeneProduct20021 (Entrez Gene)
Polr2eGeneProduct66420 (Entrez Gene)
Polr2fGeneProduct110812 (Entrez Gene)
Polr2gGeneProduct67710 (Entrez Gene)
Polr2hGeneProduct245841 (Entrez Gene)
Polr2iGeneProduct69920 (Entrez Gene)
Polr2jGeneProduct20022 (Entrez Gene)
Polr2kGeneProduct17749 (Entrez Gene)
Polr3bGeneProduct70428 (Entrez Gene)
Polr3dGeneProduct67065 (Entrez Gene)
Polr3eGeneProduct26939 (Entrez Gene)
Polr3hGeneProduct78929 (Entrez Gene)
Polr3kGeneProduct67005 (Entrez Gene)
Rpo1-1GeneProduct20016 (Entrez Gene)
Rpo1-2GeneProduct20017 (Entrez Gene)
Rpo1-3GeneProduct20018 (Entrez Gene)
Rpo1-4GeneProduct20019 (Entrez Gene)
Taf12GeneProduct66464 (Entrez Gene)
Taf13GeneProduct99730 (Entrez Gene)
Taf5GeneProduct226182 (Entrez Gene)
Taf6GeneProduct21343 (Entrez Gene)
Taf7GeneProduct24074 (Entrez Gene)
Taf9GeneProduct108143 (Entrez Gene)
TbpGeneProduct21374 (Entrez Gene)

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