C-type lectin domain family 2 member D is a protein that in humans is encoded by the CLEC2Dgene.[1]
This gene encodes a member of the natural killer cell receptor C-type lectin family. The encoded protein inhibits osteoclast formation and contains a transmembrane domain near the N-terminus as well as the C-type lectin-like extracellular domain. Several alternatively spliced transcript variants have been identified, but the full-length nature of every transcript has not been defined.[1] CLEC2D encodes the gene for the Lectin Like Transcript-1 (LLT1) protein which is a functional ligand for the human NKR-P1A receptor, encoded by the KLRB1 gene.
In mice, there are many orthologs of the CLEC2D gene, and the presumed homolog is Clr-b/Ocil (Clec2d). Clr-b has been implicated in missing-self recognition by natural killer cells through engagement of the NKR-P1B receptor.
Boles KS, Barten R, Kumaresan PR, et al. (1999). "Cloning of a new lectin-like receptor expressed on human NK cells". Immunogenetics. 50 (1–2): 1–7. doi:10.1007/s002510050679. PMID10541800.
Iizuka K, Naidenko OV, Plougastel BF, et al. (2003). "Genetically linked C-type lectin-related ligands for the NKRP1 family of natural killer cell receptors". Nat. Immunol. 4 (8): 801–7. doi:10.1038/ni954. PMID12858173.
Hu YS, Zhou H, Myers D, et al. (2004). "Isolation of a human homolog of osteoclast inhibitory lectin that inhibits the formation and function of osteoclasts". J. Bone Miner. Res. 19 (1): 89–99. doi:10.1359/JBMR.0301215. PMID14753741.
Mathew PA, Chuang SS, Vaidya SV, et al. (2004). "The LLT1 receptor induces IFN-gamma production by human natural killer cells". Mol. Immunol. 40 (16): 1157–63. doi:10.1016/j.molimm.2003.11.024. PMID15104121.
Gange CT, Quinn JM, Zhou H, et al. (2004). "Characterization of sugar binding by osteoclast inhibitory lectin". J. Biol. Chem. 279 (28): 29043–9. doi:10.1074/jbc.M312518200. PMID15123656.
Aldemir H, Prod'homme V, Dumaurier MJ, et al. (2006). "Cutting edge: lectin-like transcript 1 is a ligand for the CD161 receptor". J. Immunol. 175 (12): 7791–5. doi:10.4049/jimmunol.175.12.7791. PMID16339512.
Rosen DB, Bettadapura J, Alsharifi M, et al. (2006). "Cutting edge: lectin-like transcript-1 is a ligand for the inhibitory human NKR-P1A receptor". J. Immunol. 175 (12): 7796–9. doi:10.4049/jimmunol.175.12.7796. PMID16339513.