CD 74, CD74 antigen, CD74 molecule, CLIP, DHLAG, Gamma chain of class II antigens, HG2A_HUMAN, HLA class II histocompatibility antigen gamma chain, HLA DR antigens associated invariant chain, HLA DR gamma, HLA-DR antigens-associated invariant chain, HLA-
Plays a critical role in MHC class II antigen processing by stabilizing peptide-free class II alpha/beta heterodimers in a complex soon after their synthesis and directing transport of the complex from the endoplasmic reticulum to the endosomal/lysoso