How the Serpin α1-Proteinase Inhibitor Folds
نویسندگان
چکیده
منابع مشابه
The Serpin α1-Proteinase Inhibitor Is a Critical Substrate for Gelatinase B/MMP-9 In Vivo
We have identified the key protein substrate of gelatinase B/MMP-9 (GB) that is cleaved in vivo during dermal-epidermal separation triggered by antibodies to the hemidesmosomal protein BP180 (collagen XVII, BPAG2). Mice deficient in either GB or neutrophil elastase (NE) are resistant to blister formation in response to these antibodies in a mouse model of the autoimmune disease bullous pemphigo...
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BACKGROUND Human alpha1-proteinase inhibitor (alpha1-PI), also known as antitrypsin, is the most abundant serine protease inhibitor (serpin) in plasma. Its deficiency is associated with development of progressive, ultimately fatal emphysema. Currently in the United States, alpha1-PI is available for replacement therapy as an FDA licensed plasma-derived (pd) product. However, the plasma source i...
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The cornerstone of hemostasis is the ability of the organism to limit the enzymatic processes involved, thereby avoiding thrombosis. For this, anticoagulant systems in place involve serpins, such as PAI-1 and antithrombin III, which bind to their targeted serine proteases and limit their period of activity. We have previously identified the serine protease furin as a platelet-derived enzyme wit...
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s Issue, April 2008) and Canadian Respiratory Journal (in press).
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In the nanomolar enzyme and inhibitor concentration range, 1 mol of mucus proteinase inhibitor (MPI) inhibits 1 mol of neutrophil elastase, cathepsin G, trypsin, and chymotrypsin. In the micromolar concentration range, the enzyme:inhibitor binding stoichiometry is still 1:1 for elastase but shifts to 2:1 for the three other proteinases. These data could be confirmed by three nonenzymatic method...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2012
ISSN: 0021-9258
DOI: 10.1074/jbc.m111.315465