Kandler Justin L, Joseph Sandeep J, Balthazar Jacqueline T, Dhulipala Vijaya, Read Timothy D, Jerse Ann E, Shafer William M
Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA.
Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA.
Antimicrob Agents Chemother. 2014 Jul;58(7):4230-3. doi: 10.1128/AAC.03108-14. Epub 2014 May 12.
Phosphoethanolamine (PEA) decoration of lipid A produced by Neisseria gonorrhoeae has been linked to bacterial resistance to cationic antimicrobial peptides/proteins (CAMPs) and in vivo fitness during experimental infection. We now report that the lptA gene, which encodes the PEA transferase responsible for this decoration, is in an operon and that high-frequency mutation in a polynucleotide repeat within lptA can influence gonococcal resistance to CAMPs.
淋病奈瑟菌产生的脂多糖A上的磷酸乙醇胺(PEA)修饰与细菌对阳离子抗菌肽/蛋白质(CAMP)的抗性以及实验感染期间的体内适应性有关。我们现在报告,编码负责这种修饰的PEA转移酶的lptA基因位于一个操纵子中,并且lptA内多核苷酸重复序列中的高频突变会影响淋球菌对CAMP的抗性。