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公开(公告)号:US08771995B2
公开(公告)日:2014-07-08
申请号:US13417641
申请日:2012-03-12
申请人: Jian Liu , Robert J. Linhardt , Fikri Y. Avci , Ava M. Munoz , Jinghua Chen
发明人: Jian Liu , Robert J. Linhardt , Fikri Y. Avci , Ava M. Munoz , Jinghua Chen
CPC分类号: C12P19/64
摘要: Heparin is synthesized from a polysaccharide comprised of a 1-4 glycosidically linked alternating polymer of uronic acid and glucosamine residues, wherein the uronic acid is selected from iduronic and glucuronic acid, wherein the glucosamine is partially N-sulfated; by a series of selective reactions catalyzed by recombinant enzymes.
摘要翻译: 肝素由包含1-4糖苷键的糖醛酸交替聚合物和葡糖胺残基的多糖合成,其中糖醛酸选自艾杜糖醛酸和葡糖醛酸,其中葡糖胺部分为N-硫酸化; 通过重组酶催化的一系列选择性反应。
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公开(公告)号:US20120322114A1
公开(公告)日:2012-12-20
申请号:US13417641
申请日:2012-03-12
申请人: Jian Liu , Robert J. Linhardt , Fikri Y. Avci , Eva M. Munoz , Jinghua Chen
发明人: Jian Liu , Robert J. Linhardt , Fikri Y. Avci , Eva M. Munoz , Jinghua Chen
CPC分类号: C12P19/64
摘要: Heparosan is sulfated at the iduronic acid residue by providing a reaction mixture comprising C5 epimerase to convert glucuronic acid to iduronic acid, and at least one O-sulfotransferase (OST) enzyme and 3′-phosphoadenosine 5′-phosphosulfate (PAPS).
摘要翻译: 通过提供包含C5差向异构酶以将葡萄糖醛酸转化为艾杜糖醛酸的反应混合物和至少一种O-磺基转移酶(OST)酶和3'-磷酸腺苷5'-磷酸硫酸酯(PAPS),将Heparosan硫酸化在艾杜糖醛酸残基上。
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公开(公告)号:US20090197308A1
公开(公告)日:2009-08-06
申请号:US11920319
申请日:2006-05-12
申请人: Jian Liu , Robert J. Linhardt , Fikri Y. Avci , Eva M. Munoz , Jinghua Chen
发明人: Jian Liu , Robert J. Linhardt , Fikri Y. Avci , Eva M. Munoz , Jinghua Chen
CPC分类号: C12P19/64
摘要: A method of sulfating a polysaccharide is provided. The method can include providing a reaction mixture comprising at least one O-sulfotransferase (OST) enzyme and 3′-phosphoadenosine 5′-phosphosulfate (PAPS); incubating a polysaccharide substrate with the reaction mixture, wherein production of the sulfated polysaccharide from the polysaccharide substrate is catalyzed by the OST enzyme with a conversion of the PAPS to adenosine 3′,5′-diphosphate (PAP); and providing a reaction condition which modifies PAP to reduce an inhibitory effect of PAP on the polysaccharide sulfation.
摘要翻译: 提供了一种硫酸化多糖的方法。 该方法可以包括提供包含至少一种O-磺基转移酶(OST)酶和3'-磷酸腺苷5'-磷酸硫酸酯(PAPS)的反应混合物; 将多糖底物与反应混合物一起孵育,其中由多糖底物生产硫酸化多糖由OST酶催化,PAPS转化为腺苷3',5'-二磷酸(PAP); 提供修饰PAP以降低PAP对多糖硫酸化的抑制作用的反应条件。
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