ERO1L Proteins

Protein Information

ERO1L (endoplasmic oxidoreductin-1-like protein) is localized in ER membrane as peripheral membrane protein on the lumenal side. Its association with ERP44 is essential for its retention in the ER and is unique in coupling oxygen reduction to de novo disulfides formation. The ERO1L enzyme is broadly distributed at low levels in several tissues with highest levels in the upper digestive tract and is stimulated by hypoxia via HIF-signaling. ERO1L generally exists as monomer, but has the ability to function as monomer or homodimer and interacts with PDILT. After translation, ERO1L gets n-glycosylated and the disulfide bonds constitute the redox-active center whereby the Cys-94/Cys-99 disulfide bond accepts an electron from P4HB followed by funneling the same to the active site disulfide Cys-394/Cys-397. ERO1L acts by oxidizing directly to P4HB/PDI isomerase through direct disulfide exchange and associates with ERP44. ERO1L is implicated in immunoglobulin folding, oxidative stress, release of unfolded cholera toxin from reduced P4HB/PDI upon Vibrio cholerae infection, and plays a key role in ER stress-induced CHOP-dependent apoptosis through inositol 1,4,5-trisphosphate receptor IP3R1 activation.

Synonyms

Endoplasmic oxidoreductin-1-like protein; endoplasmic reticulum oxidation 1; endoplasmic reticulum oxidoreductase 1 alpha; endoplasmic reticulum oxidoreductase alpha; Endoplasmic reticulum oxidoreductin-1-like protein; ero1; ERO1A; Ero1alpha; ERO1-alpha; ERO1L; ERO1-L; ERO1LA; ERO1-L-alpha; ERO1-like; ERO1-like (S. cerevisiae); ERO1-like protein alpha; Giig11; Global ischemia-induced protein 11; oxidoreductin-1-L-alpha; UNQ434/PRO865