发明名称 |
Process for modifying the enzyme 7 beta -(4-carboxybutanamide) cephalosporinacylase and purifying said enzyme in a single chromatographic step |
摘要 |
PCT No. PCT/ES97/00098 Sec. 371 Date Aug. 13, 1998 Sec. 102(e) Date Aug. 13, 1998 PCT Filed Apr. 18, 1997 PCT Pub. No. WO97/40175 PCT Pub. Date Oct. 30, 1997A procedure for producing a modified 7 beta -(4-carboxybutanamide) cephalosporinase enzyme which can be purified in a single chromatographic step. The procedure for production of the enzyme involves: mutagenizing the gene which codes for the enzyme from Acinetobacter sp. ATCC 53891 by inserting a nucleotide sequence coding for six histidine residues; fusing the mutant gene with high-efficiency promoter DNA sequences; transforming Escherichia coli cells with the fusion gene construct; growing the transformed Escherichia coli cells; and recovering the enzyme by the use of supports which contain metal chelates. 7-Aminocephalosporanic acid is an important intermediate for the manufacture of a wide range of antibacterial agents of the cephalosporin family.
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申请公布号 |
US6146871(A) |
申请公布日期 |
2000.11.14 |
申请号 |
US19980981321 |
申请日期 |
1998.08.13 |
申请人 |
SNTIBIOTICOS, S. A. |
发明人 |
GARCIA LOPEZ, JOSE LUIS;CORTES RUBIO, ESTRELLA;GUISAN SEIJAS, JOSE MANUEL;BARREDO FUENTE, JOSE LUIS;DIEZ GARCIA, BRUNO;COLLADOS DE LA VIEJA, ALFONSO;VITALLER ALBA, ALEJANDRO;SALTO MALDONADO, FRANCISCO |
分类号 |
C12N15/09;C12N1/21;C12N9/78;C12N9/84;C12N9/86;C12N15/00;C12N15/55;C12P17/14;C12R1/01;C12R1/19;(IPC1-7):C12N9/18;C12N15/70 |
主分类号 |
C12N15/09 |
代理机构 |
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代理人 |
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