CD9 antigen is also known as tetraspanin29 (TSPAN29), 5H9 antigen, Leukocyte antigen MIC3 (MIC3), Motilityrelated protein, is a multipass membrane protein which belongs to the tetraspanin (TM4SF) family or the transmembrane 4 superfamily. CD9 is a cell surface glycoprotein that is known to complex with integrins and other transmembrane 4 superfamily proteins. TSPAN29 is found on the surface of exosomes. MIC3 Involved in platelet activation and aggregation, regulates paranodal junction formation and also Involved in cell adhesion, cell motility and tumor metastasis. CD9 antigen also seems to be a key part in the eggsperm fusion during mammalian fertilization. - Proteine/Peptide
