Serum Amyloid A, His Tag, human recombinant (rHuSAA1-His)

Major acute phase reactant. Apolipoprotein of the HDL complex. (www.uniprot.org) Human recombinant SAA1 produced in E.coli is a single, non-glycosylated, polypeptide chain containing 125 amino acids (fragment 19-122) and having a total molecular mass of 13.9 kDa. SAA1 is fused to 20 amino acid His Tag at N-terminus. SAA1 protein is an acute phase apolipoprotein reactant which is produced mostly by hepatocytes and under regulation of inflammatory cytokines. SAA1 (Serum amyloid A1) protein is produced mainly in the liver and circulates in low levels in the blood. The SAA1 seems to have a role in the immune system. SAA1 protein levels increase in the blood and other tissues under conditions of inflammation. SAA1 may facilitate the repair of injured tissues, it also acts as an antibacterial agent, and signals the migration of germ-fighting cells to sites of infection. SAA1 also functions as an apolipoprotein of the HDL complex.Elevated levels of SAA1 ultimately affect secondary amyloidosis, extracellular amassing of amyloid fibrils, resulting from a circulating precursor, in a variety of tissues and organs. The most widespread type of amyloidosis appears secondary to chronic inflammatory disease, mainly rheumatoid arthritis.