COS1 [YNL336W]
Endosomal protein involved in turnover of plasma membrane proteins; member of the DUP380 subfamily of conserved, often subtelomeric COS genes; required for the multivesicular vesicle body sorting pathway that internalizes plasma membrane proteins for degradation; Cos proteins provide ubiquitin in trans for nonubiquitinated cargo proteins; Belongs to the DUP/COS family.
Synonyms: COS1p, P53822, N0275, P53822p, YNL336W ...