USP8 is a hydrolase that can remove conjugated ubiquitin from proteins and therefore plays an important regulatory role at the level of protein turnover by preventing degradation. USP8 converts both 'Lys-48' an 'Lys-63'-linked ubiquitin chains. USP8 catalytic activity is enhanced in the M phase. USP8 is involved in cell proliferation. USP8 is required to enter into S phase in response to serum stimulation. USP8 may regulate T-cell anergy mediated by RNF128 via the formation of a complex containing RNF128 and OTUB1. USP8 probably regulates the stability of STAM2 and RASGRF1. USP8 regulates endosomal ubiquitin dynamics, cargo sorting, membrane traffic at early endosomes, and maintenance of ESCRT-0 stability. Synonyms: Polyclonal USP8 antibody, Anti-USP8 antibody, ubiquitin specific peptidase 8 antibody, FLJ34456 antibody, HumORF8 antibody, KIAA0055 antibody, MGC129718 antibody, UBPY antibody.