VCPIP1
Function
Deubiquitinating enzyme involved in DNA repair and reassembly of the Golgi apparatus and the endoplasmic reticulum following mitosis (PubMed:32649882). Necessary for VCP-mediated reassembly of Golgi stacks after mitosis (By similarity). Plays a role in VCP-mediated formation of transitional endoplasmic reticulum (tER) (By similarity). Mediates dissociation of the ternary complex containing STX5A, NSFL1C and VCP (By similarity). Also involved in DNA repair following phosphorylation by ATM or ATR: acts by catalyzing deubiquitination of SPRTN, thereby promoting SPRTN recruitment to chromatin and subsequent proteolytic cleavage of covalent DNA-protein cross-links (DPCs) (PubMed:32649882). Hydrolyzes 'Lys-11'- and 'Lys-48'-linked polyubiquitin chains (PubMed:23827681).
(Microbial infection) Regulates the duration of C.botulinum neurotoxin type A (BoNT/A) intoxication by catalyzing deubiquitination of Botulinum neurotoxin A light chain (LC), thereby preventing LC degradation by the proteasome, and accelerating botulinum neurotoxin intoxication in patients.
Post-translational modifications
Phosphorylated at Ser-1207 by ATM or ATR following induction of covalent DNA-protein cross-links (DPCs).
Cellular localization
- Nucleus
- Cytoplasm
- Endoplasmic reticulum
- Golgi apparatus
- Golgi stack
- Associated with Golgi stacks and endoplasmic reticulum (By similarity). Displays cytoplasmic to nuclear translocation in response to DNA-protein cross-links (DPCs)-inducing agents (PubMed:32649882).
Alternative names
KIAA1850, VCIP135, VCPIP1, Deubiquitinating protein VCPIP1, Valosin-containing protein p97/p47 complex-interacting protein 1, Valosin-containing protein p97/p47 complex-interacting protein p135, VCP/p47 complex-interacting 135-kDa protein