TABLE 2.

Levels of similarity and evolutionary distances between 16S rRNA gene sequences

Organism	Nucleotide substitution distances or nucleotide sequence similaritya
	E. muris	NA-1	I-268	E. chaffeensis	E. canis	E. sennetsu
E. muris		0.0011	0.0012	0.0103	0.0204	0.1034
NA-1	99.93		0.0021	0.0113	0.0214	0.1044
I-268	99.79	99.72		0.0104	0.0205	0.1035
E. chaffeensis	97.72	97.65	97.58		0.0155	0.0985
E. canis	96.13	96.06	95.99	97.44		0.1018
E. sennetsu	83.75	83.68	83.61	83.86	83.40

^aThe values on the upper right are average numbers of substitutions per sequence position (evolutionary distances), adjusted as described by the Kimura two-parameter model for multiple substitutions at individual positions and calculated for 1,428 positions which could be aligned unambiguously. The values on the lower left are levels of fractional nucleotide identity between sequences.