Class I Histocompatibility antigen, NKG2D ligand, domains 1 and 2
Members of this family are known as retinoic-acid-inducible proteins. They are ligands for the activating immunoreceptor NKG2D, which is widely expressed on natural killer cells, T cells, and macrophages.
Jiyao W et al.(2023). "The conserved domain database in 2023.",