Anti-USP15 antibody

Supplementary info

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

Activity summary

USP15 also known as Ubiquitin Specific Peptidase 15 is a deubiquitinating enzyme that removes ubiquitin from target proteins a process integral to protein degradation and regulation. It has a molecular mass of approximately 107 kDa. USP15 regulates protein turnover and stability through its enzymatic activity and is predominantly cytoplasmic expressed in various tissues including the brain heart and liver. Its expression pattern suggests widespread functionality across different physiological contexts.

Biological function summary

USP15 is involved in numerous cellular processes through its role in protein homeostasis. It associates with several protein complexes to regulate signaling pathways and cellular responses. USP15 plays a central role in the regulation of TGF-β signaling by deubiquitinating and stabilizing SMAD proteins that are important for signal transduction. In addition to TGF-β modulation USP15 also participates in endocytic trafficking by associating with the ESCRT complex impacting receptor degradation and cell signaling.

Pathways

The function of USP15 is critical in integrating cellular signaling networks such as the TGF-β and NF-kB pathways. Within the TGF-β pathway USP15 deubiquitinates receptor-regulated SMADs maintaining their stability and enhancing signal transduction. In the NF-kB pathway USP15 influences the activation by regulating the degradation of IκBα an inhibitor of NF-kB which indicates its role in immune response and inflammation. Through these pathways USP15 interacts with proteins like SMAD2/3 in TGF-β signaling and IκBα in NF-kB regulation.

Associated diseases and disorders

USP15 has associations with cancer and neurodegenerative diseases. In cancer altered USP15 activity leads to dysregulation of TGF-β signaling influencing tumor progression and metastasis. The enzyme interacts with proteins such as MDM2 in neurodegenerative disorders affecting p53 stability and neuronal cell survival. This suggests a role in processes like apoptosis and DNA repair critical in the onset and progression of neurodegenerative conditions. But current research continues aiming for better understanding of USP15's connections with these disorders.