名称：重组恒河猴SAA1

Synonyms：Amyloid fibril protein AA

Accession：F6V9N7

GeneID：694827

Source：Escherichia coli.

Molecular Weight：Approximately 11.7 kDa, a single non-glycosylated polypeptide chain containing 104 amino acids.

Quantity：2μg/10μg/1000μg

AA Sequence：RSWFSFLGEA YDGARDMWRA YSDMKEANYK NSDKYFHARG NYDAAQRGPG GVWAAEVISD ARENIQKLLG RGAEDTLADQ AANEWGRSGK DPNHFRPAGL PEKY

Purity：> 97 % by SDS-PAGE and HPLC analyses.

Biological Activity：Fully biologically active when compared to standard. The biological activity determined by a chemotaxis bioassay using human monocytes is in a concentration range of 10-100 ng/ml.

Physical Appearance：Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation：Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4.

Endotoxin：Less than 1 EU/μg of rRhSAA1 as determined by LAL method.

Reconstitution：We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions.

Stability & Storage：Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Reference：1. Stevens G, Ramsay M, Kluve-Beckerman B, et al. 1993. Genomics, 15: 242-3.
2. Kluve-Beckerman BandSong M. 1995. Gene, 159: 289-90.
3. Kluve-Beckerman B, Malle E, Vitt H, et al. 1991. Biochem Biophys Res Commun, 181: 1097-102.
4. Milan E, Lazzari C, Anand S, et al. 2012. J Proteomics, 76 Spec No.: 91-101.

Background：Serum Amyloid A protein-1 belongs to the SAA family of apolipoproteins that circulates in association with high-density lipoproteins (HDL). It is a multifunctional protein produced by hepatocytes in response to pro-inflammatory cytokines. SAA1 is a ligand for CD36/SR-B3, SR-B1, FPRL1, TLR2, and RAGE on monocytes/macrophages, inducing chemotaxis and generation of cytokines and tissue factor. It also can bind the surface of invading gram-negative bacteria, acting as an opsonin to aid clearance by macrophages. Additionally, SAA1 binds platelets, probably by engaging fibrinogen on the platelet surface.

SDS-PAGE：