background:
TIS11D is a member of the TIS11 family of early response genes. Family members are induced by various agonists such as the phorbol ester TPA and the polypeptide mitogen EGF. The encoded protein contains a distinguishing putative zinc finger domain with a repeating cys-his motif. This putative nuclear transcription factor most likely functions in regulating the response to growth factors.
Function:
General activator of RNA polymerase III transcription. Factor exclusively required for RNA polymerase III transcription of genes with promoter elements upstream of the initiation sites.
Subunit:
Component of TFIIIB complex. The TFIIIB complex has two activities, alpha and beta. The TFIIIB-alpha activity complex is composed of TBP, BDP1, and a complex containing both BRF2 and at least four stably associated proteins; this complex inhibits the transcription by pol III via its phosphorylation by CK2; YY1 facilitates the TFIIIB-alpha complex formation. BRF2 recruitment to the TATA box containing small nuclear RNA (snRNA) gene templates is TBP-dependent. Interacts with TBP; this interaction with TBP mediates its TATA-box recruitment of these promoters. Interacts with TBP and the BURE sequence (GSLCrich sequence downstream from the TATA box) to form a strong ternary complex which is joined by BDP1; this ternary complex stimulates pol III transcription. Forms a trimeric complex composed of TBP, BRF2 and mini-SNAPc complex (SNAP43, SNAP50, and the N-terminal third of SNAP190) on the promoter. Assembly of the TBP-BRF2 complex is stimulated by SNAP190. Interacts with MAF1 and SNAPC4.
Subcellular Location:
Nucleus.
Similarity:
Belongs to the TFIIB family.
Contains 1 TFIIB-type zinc finger.
Database links:
UniProtKB/Swiss-Prot: Q9HAW0.1
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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