S100 Calcium Binding Protein A9 (S100A9) Human Recombinant Protein

The protein encoded by this gene is a member of the S100 family of proteins containing 2 EF-hand calcium-binding motifs. S100 proteins are localized in the cytoplasm and/or nucleus of a wide range of cells, and involved in the regulation of a number of cellular processes such as cell cycle progression and differentiation. S100 genes include at least 13 members which are located as a cluster on chromosome 1q21. This protein may function in the inhibition of casein kinase and altered expression of this protein is associated with the disease cystic fibrosis. This antimicrobial protein exhibits antifungal and antibacterial activity. [provided by RefSeq, Nov 2014]

S100A9: a calcium-binding regulatory protein of the S-100 family expressed by macrophages in acutely inflammated tissues and in chronic inflammations. May be an inhibitor of protein kinases. Also expressed in epithelial cells constitutively or induced during dermatoses. May interact with components of the intermediate filaments in monocytes and epithelial cells. Interacts with CEACAM3 in a calcium-dependent manner.

Protein type: Calcium-binding

Chromosomal Location of Human Ortholog: 1q21

Cellular Component: extracellular space; cytoskeleton; extracellular region; plasma membrane; cytosol; nucleus

Molecular Function: antioxidant activity; arachidonic acid binding; protein binding; RAGE receptor binding; signal transducer activity; zinc ion binding; microtubule binding; calcium ion binding

Biological Process: caspase activation; neutrophil chemotaxis; chemokine production; chronic inflammatory response; cytokine production; response to lipopolysaccharide; positive regulation of peptide secretion; signal transduction; positive regulation of cell growth; leukocyte migration during inflammatory response; activation of NF-kappaB transcription factor; sequestering of zinc ion; response to ethanol; cell-cell signaling; response to zinc ion; actin cytoskeleton reorganization; defense response to bacterium; autophagy; innate immune response; regulation of integrin biosynthetic process; inflammatory response; defense response to fungus; positive regulation of inflammatory response; regulation of cytoskeleton organization and biogenesis