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.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Preservative
No Preservative
Concentration
LYOPH
Reconstitution Instructions
Reconstitute at 0.2 mg/mL in sterile PBS.
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Serpin A3/alpha 1-Antichymotrypsin Antibody [Unconjugated]
AACTMGC88254
ACTGIG25
alpha 1-Antichymotrypsin
alpha-1-antichymotrypsin
antitrypsin), member 3
Cell growth-inhibiting gene 24/25 protein
growth-inhibiting protein 24
growth-inhibiting protein 25
member 3
serine (or cysteine) proteinase inhibitor, clade A (alpha-1 antiproteinase
serine (or cysteine) proteinase inhibitor, clade A, member 3
Serpin A3
serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin)
Background
Serpin A3 is a member of the Serpin superfamily of the serine protease inhibitors (1). It is synthesized primarily in the liver and secreted as one of the most abundant serpins in plasma (2). It is known to inhibit several serine proteases including chymotrypsin, cathepsin G, chymase, kallikrein 3/prostate specific antigen, and unidentified ectoenzymes that process pro-macrophage stimulating protein (1‑5). Serpin A3 is a major constituent of the plaques associated with Alzheimer’s disease and an inhibitor of amyloid beta peptide degradation (1‑6). Deficiency in Serpin A3 activity due to a point mutation (Leu55Pro) is associated with chronic obstructive pulmonary disease (7). Human Serpin A3 is synthesized as a 423 amino acid precursor (8, 9). The mature protein is secreted and has two forms that differ in their N‑termini (10). One of the forms starting at Asn26 was expressed and purified.
Silverman, G.A. et al. (2001) J. Biol. Chem. 276:33293.
Kalsheker, N. et al. (2002) Biochem. Soc. Trans. 30:93.
Duranto, J. et al. (1998) Biochemistry 37:11239.
Hsieh, M.-C. and B.S. Cooperman (2002) Biochemistry 41:2990.
Skeel, A. and E.J. Leonard (2001) J. Biol. Chem. 276:21932.
Abraham, C.R. et al. (2000) Ann. N. Y. Acad. Sci. 920:245.
Gooptu, B. et al. (2000) Proc. Natl. Acad. Sci. USA 97:67.
Chandra, T. et al. (1983) Biochemistry 22:5055.
Morii, M. and J. Travis (1983) J. Biol. Chem. 258:12749.
Lindmark, B. et al. (1989) Biochim. Biophys. Acta 997:90.
Limitations
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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