Anti-USP39 antibody [EPR8684]

Supplementary info

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

Activity summary

USP39 also known as U4/U6.U5 tri-snRNP-associated protein or Sad1 homologue functions as a deubiquitinating enzyme which is essential for the ubiquitin-proteasome system in cells. This protein has a molecular mass of approximately 65 kDa and is expressed abundantly in the nucleus. It participates in the regulation of pre-mRNA splicing by facilitating the assembly of the spliceosome an intricate molecular machine.

Biological function summary

USP39 plays a significant role in pre-mRNA splicing a process critical for the maturation of messenger RNA. It forms part of the U4/U6.U5 tri-snRNP complex which is essential for spliceosome assembly. This protein ensures proper spliceosome cycling by stabilizing snRNPs contributing to the accurate removal of introns from pre-mRNA sequences. Its involvement in RNA processing highlights its importance in gene expression regulation.

Pathways

USP39 integrates into the spliceosome pathway and is also linked to the mRNA surveillance pathway. These pathways are important for correct mRNA synthesis and degradation. USP39 functions alongside other splicing factors such as PRPF8 and EFTUD2 which are important components of the spliceosome machinery. By working synchronously with these proteins it maintains efficient RNA processing and cellular homeostasis.

Associated diseases and disorders

USP39 has associations with various cancer types including breast and prostate cancer. Alterations in its expression or function can disrupt normal splicing and gene expression contributing to oncogenesis. In breast cancer for instance USP39 interacts with the BRCA1 protein influencing pathways linked to DNA repair and tumor suppression. In prostate cancer defects in its deubiquitination activity can lead to aberrant cell cycles and resistance to apoptosis highlighting its role in maintaining cellular health.