HCST, also known as DAP10, belongs to the DAP10 family. It is a transmembrane signaling adaptor that contains a YxxM motif in its cytoplasmic domain. HCST may be part of the immune recognition receptor complex. This receptor plays a major role in triggering cytotoxicity against target cells expressing cell surface ligands such as MHC class I chain-related MICA and MICB, and UL16-binding proteins (ULBPs). It may activate phosphatidylinositol 3-kinase dependent signaling pathways through its intracytoplasmic YxxM motif.
References
Wu J. et al., 1999, Science. 285 (5428): 730-2.
Karimi M. et al., 2006, J Immunol. 175 (12): 7819-28.