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. (provided by RefSeq)

S100A9 (NP_002956.1, 1 a.a. ~ 114 a.a) full-length human protein.

Sequence
MTCKMSQLERNIETIINTFHQYSVKLGHPDTLNQGEFKELVRKDLQNFLKKENKNEKVIEHIMEDLDTNADKQLSFEEFIMLMARLTWASHEKMHEGDEGPGHHHKPGLGEGTP

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 the 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.

Solution in phosphate buffered saline, pH 7.4

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