TF Info Page for GTF2B (Unknown)


Assessment Binding Mode Motif Status Notes Comments
Known motif 3 Low specificity DNA-binding protein In vivo/Misc source Only known motifs are from Transfac or HocoMoco - origin is uncertain Contacts both DNA and TBP in the structure (PDB: 1C9B)


Description: general transcription factor IIB [Source:HGNC Symbol;Acc:HGNC:4648]
Entrez Summary This gene encodes the general transcription factor IIB, one of the ubiquitous factors required for transcription initiation by RNA polymerase II. The protein localizes to the nucleus where it forms a complex (the DAB complex) with transcription factors IID and IIA. Transcription factor IIB serves as a bridge between IID, the factor which initially recognizes the promoter sequence, and RNA polymerase II. [provided by RefSeq, Jul 2008]
Ensembl ID: ENSG00000137947
External Link: CisBP
Interpro IPR000812; IPR013137; IPR013150; IPR013763; IPR023486;
Protein Domain: ENSP00000359531
Protein Domain: ENSP00000402345
Protein Domain: ENSP00000415741
Protein: ENSP00000359531DBD: OtherOther: Cyclin_C, Cyclin_N, RB_B, TFIIB, TF_Zn_Ribbon
Protein: ENSP00000402345DBD: OtherOther: Cyclin_N, RB_B, TFIIB, TF_Zn_Ribbon
Protein: ENSP00000415741DBD: OtherOther: Cyclin_N, RB_B, TFIIB, TF_Zn_Ribbon

Previous Annotations

Source Annotation
TF-CAT classification TF Gene_Transcription Factor Binding
tf co-factor binding
Basal Transcription Factor_TF PPI_
PMIDS:12972613 15037660 1729710 1922364 15749018 8621548 9420329 10546889
Vaquerizas 2009 TF classification
"a" Has direct evidence of TF function;
"b" Has evidence for an orthologous TF;
"c" contains likely DBDs, but has no functional evidence;
"x" is an unlikely TF such as predicted gene, genes with likely non-specific DBDs or that have function outside transcription;
"other" category contains proteins without clear DBDs they curated from external sources.
CisBP considers it as a TF? Yes
TFclass considers it as a TF? No
Has GO:0003700 "transcription factor activity, sequence-specific DNA binding" No
Initial Assessment
1a1 Protein has a high confidence PWM (HT-SELEX, PBM or B1H model) or there is a crystal structure that supports sequence specific DNA binding;
1a2 There is high confidence data for a close ortholog (as defined in CisBP);
2a1 There is lower confidence direct evidence, such as a Jaspar, Hocomoco or Transfac model;
2a2 There is lower confidence evidence for an close ortholog;
3a There is decent circumstantial evidence for its role as a TF or not;
4a Two or more datasets predict it as a TF;
5a One of the source datasets predicts is as a TF
1a1, Direct HQ evidence
TF has conditional DNA-binding requirements


Published Motif Data

Source Annotation Motif Evidence
TransfacTransfacLicense requiredDirect


Structure PDB 1C9B

Experimental History

Method Constructs
Tried in PBM?
(Whether the protein was tried in PBM or not)
Tried in HT-SELEX
(Whether the protein was tried in HT-SELEX or not, and if so, then what kind of clones were tested)
Other Information?
(Tried with another method and failed?)

External Contribution