用产氨短杆菌鲜菌体在以腺嘌呤代替ATP的反应系统中酶促合成辅酶A(CoA),每毫升反应液的 CoA 产量达221单位(u);在不加任何核苷酸类物质的条件下,也可达185u;合成在5小时左右达高峰。CoA 合成主要在细胞内进行。提出了连续式碳-阴离子交...用产氨短杆菌鲜菌体在以腺嘌呤代替ATP的反应系统中酶促合成辅酶A(CoA),每毫升反应液的 CoA 产量达221单位(u);在不加任何核苷酸类物质的条件下,也可达185u;合成在5小时左右达高峰。CoA 合成主要在细胞内进行。提出了连续式碳-阴离子交换树脂柱提纯CoA 的新方法,既提高了收率,又避免了原锌汞齐法的毒物危害,方法简易可行。用本法制得的结晶品含 CoA 231u/mg,收率17.0%;阴柱洗脱液不经结晶直接制成 CoA 注射液,提取率20.9%,经广州药检所检验,各项指标均符合国家标准。展开更多
The kinetics of immobilized cells of \%Brevibacterium ammoniagenes MA\|2\% and \%Brevibacterium flavum MA\|3\% cells were studied. By means of both a theoretical analysis of diffusion in the gel particles and an exper...The kinetics of immobilized cells of \%Brevibacterium ammoniagenes MA\|2\% and \%Brevibacterium flavum MA\|3\% cells were studied. By means of both a theoretical analysis of diffusion in the gel particles and an experimental determination of apparent kinetic parameters, the intrinsic kinetic parameters of immobilized cells of \%B.ammoniagenes MA\|2\% and \%B.flavum MA\|3\% cells were obtained.展开更多
文摘用产氨短杆菌鲜菌体在以腺嘌呤代替ATP的反应系统中酶促合成辅酶A(CoA),每毫升反应液的 CoA 产量达221单位(u);在不加任何核苷酸类物质的条件下,也可达185u;合成在5小时左右达高峰。CoA 合成主要在细胞内进行。提出了连续式碳-阴离子交换树脂柱提纯CoA 的新方法,既提高了收率,又避免了原锌汞齐法的毒物危害,方法简易可行。用本法制得的结晶品含 CoA 231u/mg,收率17.0%;阴柱洗脱液不经结晶直接制成 CoA 注射液,提取率20.9%,经广州药检所检验,各项指标均符合国家标准。
基金江苏省教育厅自然科学基金 (No .0 1KJD5 30 0 0 3)国家自然科学基金 (No .2 9976 0 19)化工部"95"攻关项目 (No.98 G 0 6 )~~
文摘The kinetics of immobilized cells of \%Brevibacterium ammoniagenes MA\|2\% and \%Brevibacterium flavum MA\|3\% cells were studied. By means of both a theoretical analysis of diffusion in the gel particles and an experimental determination of apparent kinetic parameters, the intrinsic kinetic parameters of immobilized cells of \%B.ammoniagenes MA\|2\% and \%B.flavum MA\|3\% cells were obtained.