Ontology highlight
ABSTRACT:
SUBMITTER: Lee D
PROVIDER: S-EPMC4342483 | biostudies-literature | 2015 Feb
REPOSITORIES: biostudies-literature
The Journal of biological chemistry 20150113 9
Calnexin is a type I integral endoplasmic reticulum (ER) membrane protein, molecular chaperone, and a component of the translocon. We discovered a novel interaction between the calnexin cytoplasmic domain and UBC9, a SUMOylation E2 ligase, which modified the calnexin cytoplasmic domain by the addition of SUMO. We demonstrated that calnexin interaction with the SUMOylation machinery modulates an interaction with protein tyrosine phosphatase 1B (PTP1B), an ER-associated protein tyrosine phosphatas ...[more]