FUNCTION: Acts as a backup for CMTM6 to regulate plasma membrane expression of PD-L1/CD274, an immune inhibitory ligand critical for immune tolerance to self and antitumor immunity. May protect PD-L1/CD274 from being polyubiquitinated and targeted for degradation. {ECO:0000269|PubMed:28813410}....
                        FUNCTION: Acts as a backup for CMTM6 to regulate plasma membrane expression of PD-L1/CD274, an immune inhibitory ligand critical for immune tolerance to self and antitumor immunity. May protect PD-L1/CD274 from being polyubiquitinated and targeted for degradation. {ECO:0000269|PubMed:28813410}.
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                        GO - Biological processes (BP): 
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                        GO - Molecular function (MF): 
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                        GO - Cellular component (CC): 
                        integral component of membrane [GO:0016021]...
                        integral component of membrane [GO:0016021]
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