Summary

Name USP8
Full Name Ubiquitin carboxyl-terminal hydrolase 8
Synonyms Deubiquitinating enzyme 8, Ubiquitin isopeptidase Y, hUBPy, Ubiquitin thioesterase 8, Ubiquitin-specific-processing protease 8 | KIAA0055, UBPY
Primary ID P40818
Links - -
Type protein
Relations 9
Function Hydrolase that can remove conjugated ubiquitin from proteins and therefore plays an important regulatory role at the level of protein turnover by preventing degradation. Converts both 'Lys-48' an 'Lys-63'-linked ubiquitin chains. Catalytic activity is enhanced in the M phase. Involved in cell proliferation. Required to enter into S phase in response to serum stimulation. May regulate T-cell anergy mediated by RNF128 via the formation of a complex containing RNF128 and OTUB1. Probably regulates the stability of STAM2 and RASGRF1. Regulates endosomal ubiquitin dynamics, cargo sorting, membrane traffic at early endosomes, and maintenance of ESCRT-0 stability. The level of protein ubiquitination on endosomes is essential for maintaining the morphology of the organelle. Deubiquitinates EPS15 and controles tyrosine kinase stability. Removes conjugated ubiquitin from EGFR thus regulating EGFR degradation and downstream MAPK signaling. Involved in acrosome biogenesis through interaction with the spermatid ESCRT-0 complex and microtubules. Deubiquitinates BIRC6/bruce and KIF23/MKLP1. Deubiquitinates BACE1 which inhibits BACE1 lysosomal degradation and modulates BACE-mediated APP cleavage and amyloid-beta formation (PubMed:27302062).

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Modifications Tables

Relations

Regulator Mechanism target score
+ up-regulates quantity by stabilization img/direct-activation.png deubiquitination BACE1 0.464
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by stabilization img/direct-activation.png deubiquitination EGFR 0.699
Publications: 2 Organism: Homo Sapiens
+ down-regulates quantity img/direct_inhibition.png destabilization MET 0.428
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity img/direct-activation.png binding STAM 0.555
Publications: 1 Organism: Homo Sapiens
+ down-regulates quantity img/direct_inhibition.png destabilization EGFR 0.699
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by stabilization img/direct-activation.png deubiquitination RNF41 0.874
Publications: 1 Organism: Homo Sapiens
+ down-regulates quantity by destabilization img/direct_inhibition.png ubiquitination USP8 0.874
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity img/direct-activation.png deubiquitination BACE1 0.464
Publications: 1 Organism: Homo Sapiens