发明名称 |
PURIFIED P-NITROBENZYL ESTERASE OF BACTERIAL ORIGIN |
摘要 |
The invention provides purified PNB esterase from a microorganism of the genus Bacillus. The enzyme is a monomer having a molecular weight of about 54,000 daltons. This PNB esterase catalyzes the deesterification of PNB-esters of cephalosporin and 1-carbacephalosporin compounds to the free acid form. The invention also provides a process for purifying the enzyme from a Bacillus species. This process comprises a combination of ammonium sulfate fractionation, pH treatment, anion-exchange chromatography, gel filtration, adsorption-desorption chromatography, and affinity chromatography. |
申请公布号 |
HU9204038(D0) |
申请公布日期 |
1993.04.28 |
申请号 |
HU19920004038 |
申请日期 |
1992.12.18 |
申请人 |
ELI LILLY AND CO.,US |
发明人 |
SHIGEYUKI,USUI,JP;CHANG-AN YU,STILLWATER,US |
分类号 |
C12N9/18;C12N15/09;C12P35/00;C12P35/02;C12R1/125 |
主分类号 |
C12N9/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|