Allen A G, Isobe T, Maskell D J
Centre for Veterinary Science, Department of Clinical Veterinary Medicine, University of Cambridge, United Kingdom.
J Bacteriol. 1998 Jan;180(1):35-40. doi: 10.1128/JB.180.1.35-40.1998.
A DNA locus from Bordetella pertussis capable of reconstituting lipopolysaccharide (LPS) O-antigen biosynthesis in Salmonella typhimurium SL3789 (rfaF511) has been isolated, by using selection with the antibiotic novobiocin. DNA within the locus encodes a protein with amino acid sequence similarity to heptosyltransferase II, encoded by waaF (previously rfaF) in other gram-negative bacteria. Mutation of this gene in B. pertussis, Bordetella parapertussis, and Bordetella bronchiseptica by allelic exchange generated bacteria with deep rough LPS phenotypes consistent with the proposed function of the gene as an inner core heptosyltransferase. These are the first LPS mutants generated in B. parapertussis and B. bronchiseptica and the first deep rough mutants of any of the bordetellae.
通过使用新霉素进行筛选,已从百日咳博德特氏菌中分离出一个能够在鼠伤寒沙门氏菌SL3789(rfaF511)中重建脂多糖(LPS)O抗原生物合成的DNA位点。该位点内的DNA编码一种蛋白质,其氨基酸序列与其他革兰氏阴性细菌中由waaF(以前称为rfaF)编码的庚糖基转移酶II相似。通过等位基因交换对百日咳博德特氏菌、副百日咳博德特氏菌和支气管败血博德特氏菌中的该基因进行突变,产生了具有深粗糙LPS表型的细菌,这与该基因作为内核庚糖基转移酶的推测功能一致。这些是在副百日咳博德特氏菌和支气管败血博德特氏菌中产生的首批LPS突变体,也是所有博德特氏菌中的首批深粗糙突变体。