FUNCTION: E3 ubiquitin-protein ligase that may mediate ubiquitination of MHC-I, CD4 and ICAM1, and promote their subsequent endocytosis and sorting to lysosomes via multivesicular bodies. E3 ubiquitin ligases accept ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and the...
                        FUNCTION: E3 ubiquitin-protein ligase that may mediate ubiquitination of MHC-I, CD4 and ICAM1, and promote their subsequent endocytosis and sorting to lysosomes via multivesicular bodies. E3 ubiquitin ligases accept ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfer the ubiquitin to targeted substrates. {ECO:0000269|PubMed:14722266, ECO:0000269|PubMed:17174307}.
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                        GO - Biological processes (BP): 
                        protein ubiquitination [GO:0016567]...
                        protein ubiquitination [GO:0016567]
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                        GO - Molecular function (MF): 
                        transferase activity [GO:0016740]; zinc ion binding [GO:0008270]...
                        transferase activity [GO:0016740]; zinc ion binding [GO:0008270]
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                        GO - Cellular component (CC): 
                        Golgi membrane [GO:0000139]; Golgi stack [GO:0005795]; integral component of membrane [GO:0016021]; lysosomal membrane [GO:0005765]; trans-Golgi network [GO:0005802]...
                        Golgi membrane [GO:0000139]; Golgi stack [GO:0005795]; integral component of membrane [GO:0016021]; lysosomal membrane [GO:0005765]; trans-Golgi network [GO:0005802]
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