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Classification |
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Domain: Bacteria Kingdom: Prokaryotae Phylum: Proteobacteria Class: Gammaproteobacteria Order: Enterobacteriales Family: Enterobacteriaceae Genus: Yersinia Species: Yersinia pestis
Yersinia pestis is unicellular, placing it in the Bacteria domain. It is classified as a Prokaryotae because of its absence of a nuclear membrane and DNA that is not organized into chromosomes. Y pestis fits in the Proteobacteria phylum because it is gram negative and a facultative anaerobe (can live in absence or presence of oxygen.) Being a purple sulfur bacteria places it in the Gammaproteobacteria class, while it is considered in the Enterobacteriaceae family because it lacks oxidase and is a non-spore forming bacteria. Y. pestis is considered a chemoorganotroph, which simply means it depends on organic material for energy and carbon. It's shape is a small, straight rod. Y. pestis is nonmotile and it's most favorable temperature is from 28-30°C. The sequencing of the entire chromosome of Yersinia pestis is currently being explored at the Sanger Center in Cambridge (UK).
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