UBF1 Antibody – Rabbit

This gene encodes a member of the HMG-box DNA-binding protein family. The encoded protein plays a critical role in ribosomal RNA transcription as a key component of the pre-initiation complex, mediating the recruitment of RNA polymerase I to rDNA promoter regions. The encoded protein may also play important roles in chromatin remodeling and pre-rRNA processing, and its activity is regulated by both phosphorylation and acetylation. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. Pseudogenes of this gene are located on the short arm of chromosomes 3, 11 and X and the long arm of chromosome 11. [provided by RefSeq, Aug 2011]

UBF: a transcription factor that recognizes the ribosomal RNA gene promoter and activates transcription mediated by RNA polymerase I through cooperative interactions with the species-specific factor SL1. Activate RNA polymerase II-regulated, beta-catenin-responsive promoters. Interacts with TAF1, a factor involved in the transcription of cell cycle and growth regulatory genes. It binds specifically to the upstream control element. Two splice variant isoforms have been described.

Protein type: Nucleolus; Transcription factor; DNA-binding

Chromosomal Location of Human Ortholog: 17q21.31

Cellular Component: nucleoplasm; nucleolus

Molecular Function: protein binding; DNA binding; chromatin binding

Biological Process: chromatin remodeling; regulation of transcription from RNA polymerase I promoter; regulation of transcription, DNA-dependent; negative regulation of gene expression, epigenetic; transcription from RNA polymerase I promoter; RNA elongation from RNA polymerase I promoter; gene expression; transcription initiation from RNA polymerase I promoter; termination of RNA polymerase I transcription; regulation of gene expression, epigenetic; positive regulation of transcription from RNA polymerase I promoter