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Any macromolecular complex composed of two or more polypeptide subunits, which may or may not be identical. Protein complexes may have other associated non-protein prosthetic groups, such as nucleotides, metal ions or other small molecules. A protein complex, distinct from RNA polymerase, that associates with DNA at promoters or at cis-acting regulatory sequences, by direct binding or by interaction with other DNA-binding polypeptides or complexes, and regulates transcription. A transcription factor TFIIIB-beta complex that contains the TATA-binding protein (TBP), B'' and BRF, and is involved in the regulation of transcription from type 2 RNA polymerase III promoters. A transcription factor complex that is involved in regulating transcription from RNA polymerase III (Pol III) promoters. TFIIIB contains the TATA-binding protein (TBP) and two Pol III-specific proteins, B'' and BRF. A transcription factor TFIIIB-beta complex that contains the TATA-binding protein (TBP), B'' and a specialized homolog of the conserved subunit BRF referred to as BRFU or TFIIIB50, which found in human but not conserved in yeast; the complex is involved in the regulation of transcription from type 3 (upstream) RNA polymerase III promoters. Any constituent part of the nucleoplasm, that part of the nuclear content other than the chromosomes or the nucleolus.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: transcription factor TFIIIB complex
Acc: GO:0000126
Aspect: Cellular Component
Desc: A transcription factor complex that is involved in regulating transcription from RNA polymerase III (Pol III) promoters. TFIIIB contains the TATA-binding protein (TBP) and two Pol III-specific proteins, B'' and BRF.
Proteins in PDR annotated with:
   This term: 16 [Search]
   Term or descendants: 16 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0000126 - transcription factor TFIIIB complex (interactive image map)
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