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公开(公告)号:US5266475A
公开(公告)日:1993-11-30
申请号:US762681
申请日:1991-09-19
IPC分类号: C12N9/92
CPC分类号: C12N9/92 , Y10S435/842
摘要: A genetically engineered glucose isomerase with improved affinity for D-glucose and the method of preparation of such a glucose isomerase are disclosed. The glucose isomerase is obtained by mutagenizing the gene of a naturally occurring glucose isomerase such that a smaller amino acid replaces a larger amino acid in the catalytic site. In an especially advantageous embodiment of the present invention, the Clostridium glucose isomerase sequence is mutated and the residue replaced with a smaller amino acid is either Trp.sub.139 or Val.sub.186.
摘要翻译: 公开了对D-葡萄糖具有改善的亲和力的遗传工程化葡萄糖异构酶和制备这种葡萄糖异构酶的方法。 葡萄糖异构酶通过诱变天然存在的葡萄糖异构酶的基因而得到,使得较小的氨基酸代替催化位点中较大的氨基酸。 在本发明的一个特别有利的实施方案中,将梭菌属葡萄糖异构酶序列突变,并用较小氨基酸替代残基是Trp139或Val186。
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公开(公告)号:US5993820A
公开(公告)日:1999-11-30
申请号:US747410
申请日:1996-11-12
申请人: Michael Bagdasarian , James Ireland
发明人: Michael Bagdasarian , James Ireland
IPC分类号: A61K38/00 , A61K39/00 , A61P37/04 , C07K14/245 , C07K14/575 , A61K39/385 , C07K1/00
CPC分类号: C07K14/245 , C07K14/575 , A61K38/00 , A61K39/00 , C07K2319/00
摘要: A chimeric protein formed of a small peptide antigen inserted into an exposed surface region of the B subunit of heat-labile enterotoxin of E. coli useful as an immunogenic vaccine composition.
摘要翻译: 插入到可用作免疫原性疫苗组合物的大肠杆菌的热不稳定肠毒素的B亚基的暴露表面区域中的小肽抗原形成的嵌合蛋白质。
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