Disulfide bonds required to assemble functional von Willebrand factor multimers.
نویسندگان
چکیده
منابع مشابه
Supranormal von Willebrand factor multimers in scleroderma.
Platelet adhesion-aggregation reactions play an early and pivotal role in the pathogenesis of systemic sclerosis in scleroderma, but the mechanisms are incompletely understood. We determined whether or not plasma from 11 consecutive patients with scleroderma contained a subset of larger than normal ("supranormal") multimers of von Willebrand factor (vWF) that are potent inducers of platelet agg...
متن کاملSupranormal von Willebrand Factor Multimers in Scieroderma
Platelet adhesion-aggregation reactions play an early and pivotal role in the pathogenesis of systemic sclerosis in scleroderma. but the mechanisms are incompletely understood. We determined whether or not plasma from 11 consecutive patients with scleroderma contained a subset of larger than normal (“supranormal”) multimers of von Willebrand factor (vWF) that are potent inducers of platelet agg...
متن کاملBinding of factor VIII to von willebrand factor is enabled by cleavage of the von Willebrand factor propeptide and enhanced by formation of disulfide-linked multimers.
von Willebrand factor (vWF) is a multimeric adhesive glycoprotein with one factor VIII binding site/subunit. Prior reports suggest that posttranslational modifications of vWF, including formation of N-terminal intersubunit disulfide bonds and subsequent cleavage of the propeptide, influence availability and/or affinity of factor VIII binding sites. We found that deletion of the vWF propeptide p...
متن کاملDisulfide bonds and the quaternary structure of factor VIII/von Willebrand factor.
Human Factor VIII/von Willebrand factor, purified by calcium citrate-cellulose chromatography and 4% agarose gel filtration was subjected to sodium dodecyl sulfate gel electrophoresis on gels containing 2% acrylamide and 0.5% agarose. We find a series of multimers of which the apparent molecular weight of the higher members was congruent with5 million. The higher multimers were isolated by 2% a...
متن کاملvon Willebrand disease "Vicenza" with larger-than-normal (supranormal) von Willebrand factor multimers.
When normal volunteers or patients with type I von Willebrand disease (VWD) are given desmopressin (DDAVP), a set of larger-than-normal (supranormal) von Willebrand factor (VWF) multimers, similar to those present in VWF-containing cells such as platelets megakaryocytes and endothelial cells, appear transiently in postinfusion plasma. In two kindreds with mild lifelong bleeding symptoms transmi...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1994
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(17)37439-2