CD43 (SPN) Antibody – Mouse Monoclonal

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: cell surface; extracellular space; membrane; plasma membrane

Molecular Function: protein binding; transmembrane receptor activity

Biological Process: cellular defense response; chemotaxis; defense response to bacterium; establishment and/or maintenance of cell polarity; immune response; leukocyte migration; negative regulation of cell adhesion; positive regulation of tumor necrosis factor biosynthetic process; signal transduction