A structurally conserved site in AUP1 binds the E2 enzyme UBE2G2 and is essential for ER-associated degradation.
Endoplasmic reticulum-associated degradation (ERAD) is a protein quality control pathway of fundamental importance to cellular homeostasis.Although multiple ERAD pathways exist for targeting topologically distinct substrates, all pathways require substrate ubiquitination.Here, we characterize a key role for the UBE2G2 Binding Region (G2BR) of the E