奇异柠檬酸杆菌的染色体编码β-内酰胺酶。与β-碘青霉素酸盐的相互作用及活性位点的标记
Chromosome-encoded beta-lactamases of Citrobacter diversus. Interaction with beta-iodopenicillanate and labelling of the active site.
作者信息
Amicosante G, Oratore A, Joris B, Galleni M, Frère J M, Van Beeumen J
机构信息
Università degli Studi dell'Aquila Dipartimento di Scienze e Tecnologie Biomediche e di Biometria, Italy.
出版信息
Biochem J. 1988 Sep 15;254(3):891-3. doi: 10.1042/bj2540891.
Abstract
Both forms of the chromosome-encoded beta-lactamase of Citrobacter diversus react with beta-iodopenicillanate at a rate characteristic of class A beta-lactamases. The active site of form I was labelled with the same reagent. The sequence of the peptide obtained after trypsin hydrolysis is identical with that of a peptide obtained in a similar manner from the chromosome-encoded beta-lactamase of Klebsiella pneumoniae.
摘要
奇异柠檬酸杆菌的两种染色体编码β-内酰胺酶形式都以A类β-内酰胺酶的特征速率与β-碘青霉素酸反应。I型的活性位点用相同试剂进行了标记。胰蛋白酶水解后得到的肽序列与以类似方式从肺炎克雷伯菌的染色体编码β-内酰胺酶获得的肽序列相同。
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