part of endoplasmic reticulum endoplasmic reticulum quality control compartment cellular_component ER-derived quality control compartment ER quality control compartment ERQC jl A subcompartment of the endoplasmic reticulum in which proteins with improper or incorrect folding accumulate. Enzymes in this compartment direct proteins with major folding problems to translocation to the cytosol and degradation, and proteins with minor folding problems to the ER, to interact with chaperon proteins. GO:0044322 2010-08-03T01:12:59Z cellular anatomical structure