FEATURES

FAMILY

DESCRIPTION

Also known as CKLF6_HUMAN, CMTM6, CKLFSF6. Master regulator of recycling and plasma membrane expression of PD-L1/CD274, an immune inhibitory ligand critical for immune tolerance to self and antitumor immunity. Associates with both constitutive and IFNG-induced PD-L1/CD274 at recycling endosomes, where it protects PD-L1/CD274 from being targeted for lysosomal degradation, likely by preventing its STUB1-mediated ubiquitination. May stabilize PD-L1/CD274 expression on antigen presenting cells and potentiates inhibitory signaling by PDCD1/CD279, its receptor on T-cells, ultimately triggering T-cell anergy. Interacts with PD-L1/CD274 (via transmembrane domain); the interaction is direct (PubMed:28813417, PubMed:28813410). Interacts with CMTM4 (PubMed:28813410). Interacts with CD58, ARG1, ENO1 and TMPO (PubMed:28813417).

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EXTERNAL LINKS

CMTM6

CKLF-like MARVEL transmembrane domain-containing protein 6

ligandability Mutations

CMTM6

Molecular Synopsis