S100A9 is a small calcium-binding protein belonging to the low-molecular weight S100 protein family. It is highly expressed in the neutrophil, monocyte cytosol and adipose tissues. During inflammation it is found at high concentration in extracellular milieu.
Synonyms: Anti-Calgranulin-B; Anti-Calprotectin L1H subunit; Anti-Leukocyte L1 complex heavy chain; Anti-MRP-14; Anti-Migration inhibitory factor-related protein 14; Anti-P14; Anti-Protein S100-A9; Anti-S100 calcium-binding protein A9
Storage: -20C
Application: Anti-S100A9 antibody produced in rabbit, a Prestige Antibody, is developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org). Each antibody is tested by immunohistochemistry against hundreds of normal and disease tissues. These images can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. The antibodies are also tested using immunofluorescence and western blotting. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit sigma.com/prestige.
Biochem Physiol Actions: S100A9 (S100 calcium binding protein A9) has pro-inflammatory action in acute and chronic inflammation. In addition to inflammatory action, it exhibits cytokine-like activities for the activation of receptor for advanced glycation end products (RAGE) and Toll-like receptor 4-dependent signaling cascades. S100A9 stimulates neutrophil chemotaxis. It stimulates shedding of L-selectin, up-regulates and activates Mac-1 which finally induce neutrophil adhesion to fibrinogen in vitro.
Legal Information: Prestige Antibodies is a registered trademark of Sigma-Aldrich Co. LLC