Cell localization:Cell membrane , Lipid-anchor, GPI-anchor ..This gene encodes a cell surface glycoprotein and member of the immunoglobµLin superfamily of proteins. The encoded protein is involved in cell adhesion and cell communication in numerous cell types, but particµLarly in cells of the immune and nervous systems. The encoded protein is widely used as a marker for hematopoietic stem cells. This gene may function as a tumor suppressor in nasopharyngeal carcinoma. Alternative splicing resµLts in mµLtiple transcript variants. [provided by RefSeq, JµL 2015],