Servicio de Microbiología, IRYCIS, Madrid, Spain.
Antimicrob Agents Chemother. 2011 May;55(5):2451-7. doi: 10.1128/AAC.01448-10. Epub 2011 Feb 22.
The association of an IS440-sul3 platform with Tn21 class 1 integrons carried by IncI1 plasmids encoding extended-spectrum β-lactamases (ESBLs; mainly SHV-12 and CTX-M-14) among worldwide Escherichia coli clones of phylogroups A (ST10, ST23, and ST46), B1 (ST155, ST351, and ST359), and D/B2 (ST131) is reported. An in silico comparative analysis of sul3 elements available in the GenBank database shows the evolution of sul3 platforms by hosting different transposable elements facilitating the potential genesis of IS26 composite transposons and further insertion element-mediated promoted arrangements.
报告了在肠杆菌科 A 群(ST10、ST23 和 ST46)、B1 群(ST155、ST351 和 ST359)和 D/B2 群(ST131)的携带编码超广谱β-内酰胺酶(主要为 SHV-12 和 CTX-M-14)的 IncI1 质粒上的 Tn21 类 1 整合子的 IS440-sul3 平台与全球大肠杆菌克隆之间的关联。对 GenBank 数据库中可用的 sul3 元件的计算机比较分析表明,sul3 平台通过容纳不同的转座元件进行进化,从而促进了 IS26 复合转座子的潜在发生,并进一步促进了插入元件介导的排列。