Function:Involved in the costimulatory signal , essential for T-cell proliferation and production of IL10 and IFNG , in an IL2-dependent and a PDCD1-independent manner. Interaction with PDCD1 inhibits T-cell proliferation and cytokine production. ,induction:Up-regulated on T- and B-cells , dendritic cells , keratinocytes and monocytes after LPS and IFNG activation. Up-regulated in B-cells activated by surface Ig cross-linking. ,similarity:Belongs to the immunoglobulin superfamily. BTN/MOG family. ,similarity:Contains 1 Ig-like C2-type (immunoglobulin-like) domain. ,similarity:Contains 1 Ig-like V-type (immunoglobulin-like) domain. ,subunit:Interacts with PDCD1. ,tissue specificity:Highly expressed in the heart , skeletal muscle , placenta and lung. Weakly expressed in the thymus , spleen , kidney and liver. Expressed on activated T- and B-cells , dendritic cells , keratinocytes and monocytes. ,
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