USP33 Antibody – Mouse Monoclonal

This gene encodes a deubiquinating enzyme important in a variety of processes, including Slit-dependent cell migration and beta-2 adrenergic receptor signaling. The protein is negatively regulated through ubiquitination by von Hippel-Lindau tumor protein (VHL). Alternative splicing results in multiple transcript variants and protein isoforms. [provided by RefSeq, Jun 2012]

USP33: Deubiquitinating enzyme involved in various processes such as cellular migration and beta-2 adrenergic receptor/ADRB2 recycling. Involved in cell migration via its interaction with intracellular domain of ROBO1, leading to regulate the Slit signaling. Plays a role in commissural axon guidance cross the ventral midline of the neural tube in a Slit-dependent manner, possibly by mediating the deubiquitination of ROBO1. Acts as a regulator of G-protein coupled receptor (GPCR) signaling by mediating the deubiquitination of beta-arrestins (ARRB1 and ARRB2) and beta-2 adrenergic receptor (ADRB2). Plays a central role in ADRB2 recycling and resensitization after prolonged agonist stimulation by constitutively binding ADRB2, mediating deubiquitination of ADRB2 and inhibiting lysosomal trafficking of ADRB2. Upon dissociation, it is probably transferred to the translocated beta-arrestins, leading to beta-arrestins deubiquitination and disengagement from ADRB2. This suggests the existence of a dynamic exchange between the ADRB2 and beta- arrestins. Deubiquitinates DIO2, thereby regulating thyroid hormone regulation. Mediates deubiquitination of both 'Lys-48'- and 'Lys-63'-linked polyubiquitin chains. Belongs to the peptidase C19 family. USP20/USP33 subfamily. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Ubiquitin conjugating system; EC 3.4.19.12; Ubiquitin-specific protease; Protease

Chromosomal Location of Human Ortholog: 1p31.1

Cellular Component: Golgi apparatus; centrosome; intermediate filament cytoskeleton; perinuclear region of cytoplasm; VCB complex; cytoplasm; autophagic vacuole

Molecular Function: protein binding; ubiquitin binding; G-protein-coupled receptor binding; zinc ion binding; cysteine-type endopeptidase activity; ubiquitin-specific protease activity; Ral GTPase binding

Biological Process: ubiquitin-dependent protein catabolic process; proteasomal ubiquitin-dependent protein catabolic process; axon guidance; cell migration; protein deubiquitination; positive regulation of protein binding; regulation of autophagy; endocytosis; negative regulation of protein binding; cellular response to starvation; centrosome duplication; regulation of G-protein coupled receptor protein signaling pathway