发明名称 |
BIOSYNTHESIS OF UNNATURAL CEPHALOSPORINS |
摘要 |
<p>A peptide precursor of the ACV (aminoadipylcysteinylvaline) type, in which the valine moiety may be replaced by any readily available amino acid may be converted into a cephalosporin of the type <CHEM> where R1 is H, lower alkyl or functionalized carboxylic group and R2 is H or lower alkyl, by reacting the precursor with novel cyclase, epimerase and ring expansion enzymes isolated from a cell-free extract of a prokaryotic organism such as Streptomyces clavuligerus. The three novel enzymes may be immobilized separately or together on a suitable support medium and the conversion may be carried out in a continuous mode.</p> |
申请公布号 |
EP0296641(A3) |
申请公布日期 |
1990.06.20 |
申请号 |
EP19880200129 |
申请日期 |
1983.08.12 |
申请人 |
QUEEN'S UNIVERSITY AT KINGSTON |
发明人 |
WOLFE, SAUL R. R.;WESTLAKE, DONALD;JENSON, SUSAN |
分类号 |
C07K5/078;C12N9/00;C12N9/90;C12N11/18;C12P35/00;C12P35/06;C12P37/00 |
主分类号 |
C07K5/078 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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