Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.
Antimicrob Agents Chemother. 2011 Jan;55(1):399-401. doi: 10.1128/AAC.00421-10. Epub 2010 Oct 25.
The IMP-13 metallo-β-lactamase was overproduced in Escherichia coli BL21(DE3) and purified by chromatography. Analysis of kinetic parameters revealed some notable differences with other IMP-type enzymes, noteworthily a higher catalytic efficiency toward ticarcillin and piperacillin and a marked preference for imipenem over meropenem.
IMP-13 金属β-内酰胺酶在大肠杆菌 BL21(DE3)中过表达,并通过色谱法进行纯化。动力学参数分析显示与其他 IMP 型酶存在一些显著差异,值得注意的是,对替卡西林和哌拉西林的催化效率更高,对亚胺培南的偏好明显高于美罗培南。