ATZ11 Recognizes Not Only Z-α1-Antitrypsin-Polymers and Complexed Forms of Non-Z-α1-Antitrypsin but Also the von Willebrand Factor
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منابع مشابه
ATZ11 Recognizes Not Only Z-α1-Antitrypsin-Polymers and Complexed Forms of Non-Z-α1-Antitrypsin but Also the von Willebrand Factor
AIMS The ATZ11 antibody has been well established for the identification of α1-anti-trypsin (AAT) molecule type PiZ (Z-AAT) in blood samples and liver tissue. In this study, we systematically analyzed the antibody for additional binding sites in human tissue. METHODS AND RESULTS Ultrastructural ATZ11 binding was investigated immunoelectron microscopically in human umbilical vein endothelial c...
متن کاملMolecular Mechanism of Z α1-Antitrypsin Deficiency*
The Z mutation (E342K) of α1-antitrypsin (α1-AT), carried by 4% of Northern Europeans, predisposes to early onset of emphysema due to decreased functional α1-AT in the lung and to liver cirrhosis due to accumulation of polymers in hepatocytes. However, it remains unclear why the Z mutation causes intracellular polymerization of nascent Z α1-AT and why 15% of the expressed Z α1-AT is secreted in...
متن کاملCirculating polymers in α1-antitrypsin deficiency.
Most individuals carry two wild-type M alleles of the SERPINA1 gene which encodes a1-antitrypsin. 95% of severe deficiency of a1-antitrypsin is associated with the Z allele (Glu342Lys; denoted PiZZ in the homozygote), and with the retention and polymerisation of a1-antitrypsin within hepatocytes [1]. These polymers are contained within periodic acid–Schiff-positive, diastase-resistant inclusion...
متن کاملPolymers of Z α1-antitrypsin are secreted in cell models of disease.
The α1-antitrypsin (α1-AT) is a 52 kDa glycoprotein that is predominantly synthesised in the liver and secreted into the circulation, where it protects the lungs from the enzyme neutrophil elastase. α1-AT deficiency (α1-ATD) is caused by mutations in the α1-AT gene, with most cases resulting from homozygous inheritance of the Z allele (Glu342Lys). This leads to low levels of circulating α1-AT, ...
متن کاملThe shapes of Z-α1-antitrypsin polymers in solution support the C-terminal domain-swap mechanism of polymerization.
Emphysema and liver cirrhosis can be caused by the Z mutation (Glu342Lys) in the serine protease inhibitor α1-antitrypsin (α1AT), which is found in more than 4% of the Northern European population. Homozygotes experience deficiency in the lung concomitantly with a massive accumulation of polymers within hepatocytes, causing their destruction. Recently, it was proposed that Z-α1AT polymerizes by...
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ژورنال
عنوان ژورنال: PLoS ONE
سال: 2014
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0091538