UCHL1: Ubiquitin-protein hydrolase involved both in the processing of ubiquitin precursors and of ubiquitinated proteins. This enzyme is a thiol protease that recognizes and hydrolyzes a peptide bond at the C-terminal glycine of ubiquitin. Also binds to free monoubiquitin and may prevent its degradation in lysosomes. The homodimer may have ATP-independent ubiquitin ligase activity. Monomer. Homodimer. Interacts with SNCA. Interacts with COPS5. Found in neuronal cell bodies and processes throughout the neocortex. Expressed in neurons and cells of the diffuse neuroendocrine system and their tumors. Weakly expressed in ovary. Down-regulated in brains from Parkinson disease and Alzheimer disease patients. Belongs to the peptidase C12 family.
Protein type: Cell development/differentiation; EC 3.4.19.12; Ligase; Protease; Ubiquitin conjugating system
Chromosomal Location of Human Ortholog: 4p13
Cellular Component: axon cytoplasm; cell soma; cytoplasm; cytosol; endoplasmic reticulum membrane; extracellular exosome; myelin sheath; neuron projection terminus; nucleoplasm; plasma membrane
Molecular Function: alpha-2A adrenergic receptor binding; cysteine-type endopeptidase activity; ligase activity; omega peptidase activity; protein binding; thiol-dependent ubiquitin-specific protease activity; thiol-dependent ubiquitinyl hydrolase activity; ubiquitin binding; ubiquitin protein ligase binding
Biological Process: adult walking behavior; axon target recognition; axonal transport of mitochondrion; cell proliferation; eating behavior; muscle fiber development; negative regulation of MAP kinase activity; neuromuscular process; proteasomal ubiquitin-dependent protein catabolic process; protein deubiquitination; regulation of macroautophagy; sensory perception of pain
Disease: Neurodegeneration With Optic Atrophy, Childhood-onset; Parkinson Disease 5, Autosomal Dominant
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