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Potential Mobilization of mcr-10 by an Integrative Mobile Element via Site-Specific Recombination in Cronobacter sakazakii.

Jing YangLina LiuYu FengDa HeChengcheng WangZhiyong Zong
Published in: Antimicrobial agents and chemotherapy (2021)
mcr-10 is a newly identified plasmid-borne colistin resistance gene, but its mobilization mechanism remains unclear. In this study, mcr-10 was found on an IncFIB plasmid carrying virulence genes mrkABCDFJ, iucABCD/iutA, and eitCBAD in a Cronobacter sakazakii isolate. By comparison with closely related plasmids, two recombination sites were identified flanking the genetic element containing mcr-10 and an integrase-encoding gene, suggesting that site-specific recombination mediated by an integrase of an integrative mobile element is a potential mechanism for mobilizing mcr-10.
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