免 疫 原:KLH conjugated synthetic peptide derived from human CD9
抗原表位:101-200/228
抗原细胞定位:Extracellular
SWISS:P21926
Gene ID :928
Human Gene ID:928
CD9 antigen is a glycoprotein expressed on the surface of developing B lymphocytes, platelets, monocytes, eosinophils, basophil, stimulated T lymphocytes and by neurons and glial cells in the peripheral nervous system. It belongs to a family of membrane proteins termed tetraspanins which transverse the membrane four times. In pre B cells and platelets, CD9 antigen regulates cell activation and aggregation possibly through an association with the integrin CD41 / CD61 (GPIIb / GPIIIa). It also regulates cell motility in a variety of cell lines, and appears to be an important regulator of Schwann cell behaviour in peripheral nerve.
Function:Involved in platelet activation and aggregation. Regulates paranodal junction formation. Involved in cell adhesion, cell motility and tumor metastasis. Required for sperm-egg fusion.
Subunit:Forms both disulfide-linked homodimers and higher homooligomers as well as heterooligomers with other members of the tetraspanin family. Associates with CR2/CD21 and with PTGFRN/CD9P1. Interacts directly with IGSF8.
Subcellular Location:Membrane; Multi-pass membrane protein.
Tissue Specificity:Expressed by a variety of hematopoietic and epithelial cells.
Post-translational modifications:Protein exists in three forms with molecular masses between 22 and 27 kDa, and is known to carry covalently linked fatty acids.
Similarity:Belongs to the tetraspanin (TM4SF) family.
Important Note:This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.