Electrophilic adduction of ubiquitin activating enzyme E1 by N,N-diethyldithiocarbamate inhibits ubiquitin activation and is accompanied by striatal injury in the rat.

ABSTRACT: Previous studies have shown ubiquitin activating enzyme E1 to be sensitive to adduction through both Michael addition and SN(2) chemistry in vitro. E1 presents a biologically important putative protein target for adduction due to its role in initiating ubiquitin based protein processing and the involvement of impaired ubiquitin protein processing in two types of familial Parkinson's disease. We tested whether E1 is susceptible to xenobiotic-mediated electrophilic adduction in vivo and explored the potential contribution of E1 adduction to neurodegenerative events in an animal model. N,N-Diethyldithiocarbamate (DEDC) was administered to rats using a protocol that produces covalent cysteine modifications in vivo, and brain E1 protein adducts were characterized and mapped using shotgun LC-MS/

SUBMITTER: Viquez OM 

PROVIDER: S-EPMC3502677 | biostudies-literature | 2012 Nov

REPOSITORIES: biostudies-literature