Legionellales

The Legionellales are an order of Pseudomonadota ("Proteobacteria"). Like all Pseudomonadota, they are Gram-negative.<ref name=BergeyGamma>George M. Garrity: Bergey's Manual of Systematic Bacteriology. 2. Auflage. Springer, New York, 2005, Volume 2: The Proteobacteria, Part B: The Gammaproteobacteria</ref> They comprise two families, typified by Legionella and Coxiella, both of which include notable pathogens. For example, Q fever is caused by Coxiella burnetii and Legionella pneumophila causes Legionnaires' disease<ref>Fraser, D.W., Tsai, T,. Orenstein, W., et al. (1977). Legionnaires' disease: description of an epidemic of pneumonia. New England Journal of Medicine. 297:1189–1197.</ref><ref>McDade, JE., Shepard, C.C., Fraser, D.W., et al., (1977) Legionnaires' Disease — Isolation of a Bacterium and Demonstration of Its Role in Other Respiratory Disease. New England Journal of Medicine. 297: 1197–1203.</ref> and Pontiac fever.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>[1]Template:Dead linkTemplate:Cbignore</ref><ref>Template:Cite journal</ref>

Members of the order Legionellales can be molecularly distinguished from other Gammaproteobacteria by the presence of four conserved signature indels (CSIs) in the proteins tRNA-guanine(34) transglycosylase, lipoprotein-releasing system transmembrane protein lolE and tRNA (guanosine(37)-N1)-methyltransferase TrmD.<ref>Template:Cite journal</ref>

External links

• Legionellales LPSN List of Prokaryotic names with Standing in Nomenclature

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