Homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 1 protein (HERPUD1)

Component of the endoplasmic reticulum quality control (ERQC) system also known as ER-associated degradation (ERAD) involved in ubiquitin-dependent degradation of misfolded endoplasmic reticulum proteins. Could enhance presenilin-mediated amyloid-beta protein 40 generation.

Binds to ubiquilins and this interaction is required for efficient degradation of CD3D through the ERAD pathway (PubMed:18307982). .