Ubiquitin carboxyl-terminal hydrolase L1 (UCH–L1), also known as PGP 9.5, is a neuronal and neuroendocrine-specific protein that plays a role in proteosomal protein degradation, which is critical for neuronal health. UCH-L1 is also involved in p27kip1 degradation through its interaction and nuclear translocation with JAB1. UCH-L1 expression is specifically associated with non small-cell lung cancer development and it is found in serum of patients with lung cancer, indicating that it may be important in lung cancer screening and diagnosis UCH-L1 may also be a useful marker for invasive colorectal cancer. Mutations in the alpha-synuclein and Uch-L1 genes cause autosomal dominant Parkinson’s disease (PD). Derangements in the ubiquitin proteasomal pathway may play important roles in the demise of dopamine neurons in PD.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.