CD9 Antibody – Mouse Monoclonal

This gene encodes a member of the transmembrane 4 superfamily, also known as the tetraspanin family. Tetraspanins are cell surface glycoproteins with four transmembrane domains that form multimeric complexes with other cell surface proteins. The encoded protein functions in many cellular processes including differentiation, adhesion, and signal transduction, and expression of this gene plays a critical role in the suppression of cancer cell motility and metastasis. [provided by RefSeq, Jan 2011]

CD9: Involved in platelet activation and aggregation. Regulates paranodal junction formation. Involved in cell adhesion, cell motility and tumor metastasis. Required for sperm-egg fusion. Belongs to the tetraspanin (TM4SF) family.

Protein type: Cell adhesion; Membrane protein, multi-pass; Membrane protein, integral; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 12p13.3

Cellular Component: extracellular space; platelet alpha granule membrane; focal adhesion; integral to plasma membrane; apical plasma membrane; plasma membrane; vesicle; external side of plasma membrane

Molecular Function: integrin binding; protein binding

Biological Process: platelet activation; fusion of sperm to egg plasma membrane; pathogenesis; multicellular organism reproduction; paranodal junction assembly; negative regulation of cell proliferation; platelet degranulation; single fertilization; brain development; cell adhesion; oligodendrocyte development; blood coagulation; cell motility; response to water deprivation