The protein encoded by this gene is a member of the transmembrane 4 superfamily, also known as the tetraspanin family. Most of these members are cell-surface proteins that are characterized by the presence of four hydrophobic domains. The proteins mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility. This encoded protein is a cell surface glycoprotein that is known to complex with integrins and other transmembrane 4 superfamily proteins. It can modulate cell adhesion and migration and also trigger platelet activation and aggregation. In addition, the protein appears to promote muscle cell fusion and support myotube maintenance. [provided by RefSeq
Other Designations:
5H9 antigen,CD9 antigen,CD9 antigen (p24),OTTHUMP00000041574,OTTHUMP00000041576,antigen defined by monoclonal antibody 602-29,growth-inhibiting gene 2 protein,leukocyte antigen MIC3,motility related protein,motility related protein-1,p24 antigen