Biological process

maintenance of protein localisation in endoplasmic reticulum, maintenance of protein localization in ER, maintenance of protein location in ER, maintenance of protein location in endoplasmic reticulum, protein-ER retention, protein-endoplasmic reticulum retention, retention of protein in ER, retention of protein in endoplasmic reticulum

Any process in which a protein is maintained in the endoplasmic reticulum and prevented from moving elsewhere. These include sequestration within the endoplasmic reticulum, protein stabilization to prevent transport elsewhere and the active retrieval of proteins that escape the endoplasmic reticulum.