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Official Full Name: CD1d molecule
Also known as: R3; CD1A; R3G1
This gene encodes a distinct member of the CD1 family of transmembrane glycoproteins that is structurally related to major histocompatibility complex (MHC) proteins and forms heterodimers with beta-2 microglobulin. The CD1 protein mediates the self or microbial origin of major lipid and glycolipid antigens to T cells. The human genome contains five CD1 family genes, which are arranged on chromosome 1. CD1 family members are thought to differ in their cellular localization and specificity for specific lipid ligands. The protein encoded by this gene localizes to late endosomes and lysosomes via a tyrosine motif in the cytoplasmic tail. Two transcript variants of this gene have been found to encode different isoforms.