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.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Reconstitute at 0.2 mg/mL in sterile PBS.
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Fetuin A/AHSG Antibody [Unconjugated]
Human Fetuin A, also known as alpha 2-Heremans-Schmid glycoprotein, is encoded by the AHSG gene. It is a major plasma protein and a member of the cystatin superfamily of protease inhibitors (1, 2). It is expressed by hepatocytes, the principal cell source, and by monocyte/macrophages (3). The major form of plasma Fetuin A corresponds to a disulfide bond-linked two chains derived from the single chain (4). Human Fetuin A has a number of functions. It is a negative acute-phase protein with normal circulating levels in adults (300-600 μg/mL), which fall significantly (30-50%) during injury and infection (5). It enhances entry of cationic inhibitors into macrophages (6). It inhibits both insulin receptor autophosphorylation and undesirable calcification (6, 7). The purified rhFetuin A corresponds to the single chain, which can be converted to the two-chain form by rhFurin (R&D Systems, Catalog # 1503-SE) in vitro. However, the conversion does not enhance its inhibitory activity against rhCathpesin V, a cysteine protease.
Kellemann, J. et al. (1989) J. Biol. Chem. 264:14121.
Dziegielewska, K.M. et al. (1990)J. Biol. Chem.265:4354.
Dziegielewska, K.M. et al. (1996) Histochem. Cell Biol.106:319.
Gejyo, F. and K. Schmid (1981) Biochim. Biophys. Acta. 671:78.
Wang, H. et al. (1998) Proc. Natl. Acad. Sci. USA 95:14429.
Mathews, S.T. et al. (2000) Mol. Cell Endocrinol.164:87.
Schäfer, C. et al. (2003) J. Clin. Invest. 112:357.
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.
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