BRF1 Antibody – Rabbit Polyclonal

This gene encodes one of the three subunits of the RNA polymerase III transcription factor complex. This complex plays a central role in transcription initiation by RNA polymerase III on genes encoding tRNA, 5S rRNA, and other small structural RNAs. The gene product belongs to the TF2B family. Several alternatively spliced variants encoding different isoforms, that function at different promoters transcribed by RNA polymerase III, have been identified. [provided by RefSeq, Jun 2011]

GTF3B: General activator of RNA polymerase which utilizes different TFIIIB complexes at structurally distinct promoters. The isoform 1 is involved in the transcription of tRNA, adenovirus VA1, 7SL and 5S RNA. Isoform 2 is required for transcription of the U6 promoter. Belongs to the TFIIB family. 7 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription initiation complex

Chromosomal Location of Human Ortholog: 14q

Cellular Component: nucleoplasm; transcription factor TFIIIB complex

Molecular Function: zinc ion binding; TATA-binding protein binding

Biological Process: transcription from RNA polymerase III promoter; transcription initiation from RNA polymerase III promoter; tRNA transcription; regulation of transcription, DNA-dependent; gene expression; regulation of mRNA stability; rRNA transcription

Disease: Cerebellofaciodental Syndrome