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A9024

Sigma-Aldrich

α1-Antitrypsin from human plasma

salt-free, lyophilized powder

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Synonym(s):
α1-Proteinase inhibitor
CAS Number:
9041-92-3
EC Number:
232-924-7
MDL number:
MFCD00130469
UNSPSC Code:
12352202
NACRES:
NA.77

biological source

human plasma

Quality Level

200

Assay

≥70% protein basis (biuret)

form

salt-free, lyophilized powder

UniProt accession no.

P01009
P08246

storage temp.

2-8°C

Gene Information

human ... ELA2(1991) , SERPINA1(5265)

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Biochem/physiol Actions

Serine protease inhibitor; inhibits trypsin, chymotrypsin and pancreatic and granulocytic elastase, and acrosin. Effective concentration equimolar with proteinase.The effects of hereditary α1-antitrypsin deficiency and certain autoimmune states result from uncontrolled proteolysis in vivo. Direct α1-antitrypsin replacement therapy has shown promise in animal models of Type 1 diabetes.
1-4 mg will inhibit 1.0 mg of trypsin with activity of approx. 10,000 BAEE units per mg protein. 1-6 mg will inhibit 1.0 mg of α-chymotrypsin with activity of >=40 BTEE units per mg protein.

Caution

Aqueous stock solutions containing 0.01% NaN3 are stable for several months. Solutions can be stored at −80 °C, but should not be refrozen. Unstable below pH 5.5. Inactivated by some non-serine proteinases and by oxidation of active site methionine residue.

Preparation Note

Chromatographically prepared and partially purified.

Disclaimer

RESEARCH USE ONLY. This product is regulated in France when intended to be used for scientific purposes, including for import and export activities (Article L 1211-1 paragraph 2 of the Public Health Code). The purchaser (i.e. enduser) is required to obtain an import authorization from the France Ministry of Research referred in the Article L1245-5-1 II. of Public Health Code. By ordering this product, you are confirming that you have obtained the proper import authorization.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

常规特殊物品

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

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    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What is the carbohydrate content of human alpha-1-Antitrypsin?

    We have found the information on alpha-1-antitrypsin in a reference book:The Plasma Proteins, F.W. Putnam, ed, volume 2, chapter 4, Table II.The alpha-1-antitrypsin is 12 percent carbohydrate, citing K. Heide and H.G. Schwick, Chemistry and Significance of the Carbohydrate Moieties of Human Serum Glycoproteins, Angew. Chem., Int. Ed. Eng., 12, 721-733 (1973).The table also gives information on the percentage of each type of monosaccharide that is present.

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Roy B Lefkowitz et al.
Analytical chemistry, 82(19), 8251-8258 (2010-09-11)
The ability to measure protease activity in the blood is important for the development of future diagnostics and for biomedical research. Presently, protease assays require sample preparation, making them time-consuming, costly, less accurate, and unsuitable for point-of-care (POC) diagnostics. Recently
B Halliwell et al.
FEBS letters, 213(1), 15-17 (1987-03-09)
Ascorbic acid, at physiological concentrations, can scavenge the myeloperoxidase-derived oxidant hypochlorous acid at rates sufficient to protect alpha 1-antiprotease against inactivation by this molecule. The rapid depletion of ascorbic acid at sites of inflammation, as in the inflamed rheumatoid joint
M Wasil et al.
The Biochemical journal, 243(3), 867-870 (1987-05-01)
Thiourea and dimethylthiourea are powerful scavengers of hydroxyl radicals (.OH), and dimethylthiourea has been used to test the involvement of .OH in several animal models of human disease. It is shown that both thiourea and dimethylthiourea are scavengers of HOCl
B M Bany et al.
Biology of reproduction, 47(4), 514-519 (1992-10-01)
The objective of this study was to investigate the uterine uptake of plasma alpha 1-proteinase inhibitor (53,000 Da) and alpha 2-macroglobulin (725,000 Da) from the blood during implantation in the mouse using isotopic methods. The uterine uptake of albumin (67,000
M Whiteman et al.
FEBS letters, 414(3), 497-500 (1997-10-10)
Peroxynitrite (ONOO-) is a cytotoxic species formed in vivo. There is considerable interest in the development of ONOO- 'scavengers' as therapeutic agents; several thiols have been suggested to fulfil this role. One protein inactivated by ONOO- is alpha1-antiproteinase (alpha1AP), the
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