TABLE 4.

Percent nucleotide identity between IVSs from helix 45 of the 23S rRNA of Proteus, Providencia, and Salmonella strains^a

IVS family		% Nucleotide identity for (family, strain, gene):
		Q		R							M
Strain	rrl gene	SA5473		SA5474				SA5564			LT2
		B	G	B	C	E	G	C	E	G	rrlHb
P. rettgeri SA5473	B		100	78	78	77	78	78	78	78	66
P. rettgeri SA5473	G	100		78	78	77	78	78	78	78	66
P. vulgaris SA5474	B	78	78		100	99	100	100	100	100	69
P. vulgaris SA5474	C	78	78	100		99	100	100	100	100	69
P. vulgaris SA5474	E	77	77	99	99		99	99	99	99	68
P. vulgaris SA5474	G	78	78	100	100	99		100	100	100	69
P. vulgaris SA5564	C	78	78	100	100	99	100		100	100	69
P. vulgaris SA5564	E	78	78	100	100	99	100	100		100	69
P. vulgaris SA5564	G	78	78	100	100	99	100	100	100		69
Salmonella serovar Typhimurium LT2	rrlHb	66	66	69	69	68	69	69	69	69

^aNucleotide identity comparisons were done by using DNASIS version 2.0 for the Macintosh. A family consists of IVS sequences with ≥90% nucleotide identity. rrl genes have been named for the I-CeuI fragments from which they were isolated, except in the case of Salmonella serovar Typhimurium, where the gene designation is given. Boxes are described in Table 3, footnote a. 

^bThe nucleotide sequences are all from this report except for Salmonella LT2 rrlH (GenBank accession no. U49926).