Probable flavoprotein which may function in endoplasmic reticulum associated degradation (ERAD). May bind non-native proteins in the endoplasmic reticulum and target them to the ubiquitination machinery for subsequent degradation. Interacts with SEL1L. May interact with OS9 and DNAJC10. Interacts with TXNDC16 (PubMed:21359175). N-glycosylated. Belongs to the FOXRED2 family.