Anti-UBF1 antibody [EP2741Y]

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

UBF1 also known as Upstream Binding Factor 1 is a transcription factor with a mass of approximately 97 kDa. It plays a mechanical role in facilitating the transcription of ribosomal RNA (rRNA) by binding to the core promoter element of rRNA genes. This action stimulates the recruitment of RNA polymerase I to the rDNA promoter site. UBF1 expresses in the nucleolus of eukaryotic cells where it functions as part of a nucleolar complex. Its presence is important for the structural organization and function of the nucleolus.

Biological function summary

UBF1 is essential for the regulation of ribosomal biogenesis. It binds to the rDNA enhancer and the rDNA promoter as part of the transcription initiation complex helping to modulate the synthesis of rRNA. UBF1 works synergistically with other nucleolar proteins such as SL1 and TIF-IA. This complex behavior influences cellular growth and proliferation. The interaction of UBF1 acting either alone or in combination with factors like SL1 controls the transcription rate of rRNA impacting the overall protein synthesis capacity of the cell.

Pathways

UBF1 plays a significant role in the cellular growth and ribosome biogenesis pathways due to its fundamental participation in rRNA transcription. It interacts closely with components of the RNA polymerase I transcription machinery. UBF1 also links to the mTOR signaling pathway which is pivotal for cell growth regulation. Interactions with other proteins such as RRN3 help mediate the link between transcriptional regulation by UBF1 and these broader signaling pathways.

Associated diseases and disorders

UBF1 links to various pathological conditions especially cancer and growth disorders. Aberrations in UBF1 expression or function can lead to unchecked cellular proliferation and tumorigenesis as seen in certain types of cancer. Its connection to the rRNA synthesis pathway implicates it in growth disorders associated with defective ribosome production. Altered interactions between UBF1 and other proteins like p53 play a role in these disease states either by disrupting normal cell cycle control or by enabling the continued presence of harmful mutations.