Tagg Kaitlin A, Iredell Jonathan R, Partridge Sally R
Centre for Infectious Diseases and Microbiology, Westmead Millennium Institute, and The University of Sydney, Westmead, New South Wales, Australia.
Centre for Infectious Diseases and Microbiology, Westmead Millennium Institute, and The University of Sydney, Westmead, New South Wales, Australia
Antimicrob Agents Chemother. 2014 Aug;58(8):4949-52. doi: 10.1128/AAC.02773-14. Epub 2014 Jun 2.
Sequencing of pJIE512b, a 92.3-kb IncI1 sequence type 2 (ST2) plasmid carrying bla(CMY-2), revealed a bla(CMY-2) context that appeared to have been mobilized from an IncA/C plasmid by the insertion sequence IS1294. A comparison with published plasmids suggests that bla(CMY-2) has been mobilized from IncA/C to IncI1 plasmids more than once by IS1294-like elements. Alignment of pJIE512b with the only other available IncI1 ST2 plasmid revealed differences across the backbones, indicating variability within this sequence type.
对携带bla(CMY - 2)的92.3 kb IncI1序列类型2(ST2)质粒pJIE512b进行测序,结果显示bla(CMY - 2)的上下游序列似乎是通过插入序列IS1294从IncA/C质粒中转移过来的。与已发表质粒的比较表明,bla(CMY - 2)已不止一次通过类似IS1294的元件从IncA/C质粒转移到IncI1质粒中。将pJIE512b与唯一另一个可用的IncI1 ST2质粒进行比对,结果显示主干序列存在差异,表明该序列类型存在变异性。