CD43 (SPN) Antibody – Rabbit Polyclonal

The protein encoded by this gene is a major sialoglycoprotein found on the surface of thymocytes, T lymphocytes, monocytes, granulocytes, and some B lymphocytes. It may be part of a physiologic ligand-receptor complex involved in T-cell activation. During T-cell activation, this protein is actively removed from the T-cell-APC (antigen-presenting cell) contact site, suggesting a negative regulatory role in adaptive immune response. [provided by RefSeq, Sep 2011]

sialophorin: One of the major glycoproteins of thymocytes and T lymphocytes. Plays a role in the physicochemical properties of the T-cell surface and in lectin binding. Presents carbohydrate ligands to selectins. Has an extended rodlike structure that could protrude above the glycocalyx of the cell and allow multiple glycan chains to be accessible for binding. Is a counter-receptor for SN/Siglec-1. During T-cell activation is actively removed from the T-cell-APC (antigen-presenting cell) contact site thus suggesting a negative regulatory role in adaptive immune response. Interacts with HIPK2 via the cytoplasmic domain. Interacts with RDX. Cell surface of thymocytes, T-lymphocytes, neutrophils, plasma cells and myelomas.

Protein type: Cell surface; Membrane protein, integral

Chromosomal Location of Human Ortholog: 16p11.2

Cellular Component: extracellular space; cell surface; membrane; integral to plasma membrane; plasma membrane; basement membrane; uropod; external side of plasma membrane

Molecular Function: protein binding; transmembrane receptor activity

Biological Process: positive regulation of tumor necrosis factor biosynthetic process; regulation of defense response to virus; establishment and/or maintenance of cell polarity; negative regulation of cell adhesion; chemotaxis; signal transduction; negative thymic T cell selection; negative regulation of T cell proliferation; cell surface receptor linked signal transduction; response to protozoan; T cell costimulation; defense response to bacterium; cellular defense response; positive regulation of T cell proliferation; immune response; positive regulation of protein amino acid phosphorylation; blood coagulation; negative regulation of type IV hypersensitivity; leukocyte migration