CLEC12B
Domain
Contains 1 copy of a cytoplasmic motif that is referred to as the immunoreceptor tyrosine-based inhibitor motif (ITIM). This motif is involved in modulation of cellular responses. The phosphorylated ITIM motif can bind the SH2 domain of several SH2-containing phosphatases.
Function
Inhibitory receptor postulated to negatively regulate immune and non-immune functions (PubMed:17562706, PubMed:34310951). Upon phosphorylation, recruits SH2 domain-containing PTPN6 and PTPN11 phosphatases to its ITIM motif and antagonizes activation signals (PubMed:17562706, PubMed:34310951). Although it inhibits KLRK1/NKG2D-mediated signaling, it does not bind known ligands of KLRK1/NKG2D and therefore is not its inhibitory counterpart (PubMed:17562706). May limit activation of myeloid cell subsets in response to infection or tissue inflammation (PubMed:17562706). May protect target cells against natural killer cell-mediated lysis (PubMed:17562706). May negatively regulate cell cycle and differentiation of melanocytes via inactivation of STAT3 (PubMed:34310951).
Post-translational modifications
N-glycosylated.
Tissue Specificity
Detected in colon, heart, kidney, liver, lung, mammary gland, ovary, spleen and testis (PubMed:17562706). Expressed in melanocytes (at protein level) (PubMed:34310951).
Cellular localization
- Cell membrane
- Single-pass type II membrane protein
Alternative names
UNQ5782/PRO16089, CLEC12B, C-type lectin domain family 12 member B, Macrophage antigen H