TABLE 2.

Identities and similarities of LuxI and LuxR homologs^a

Homolog	% Identical (identical and similar) amino acidsb
	Tra	Rhl	Lux	Rhi
RaiI	28 (47)	25 (40)	23 (40)	—c
RaiR	18 (32)	22 (39)	17 (29)	17 (34)

^aReferences for the sequences are as follows: TraI, A. tumefaciens (31); RhlI and RhlR, P. aeruginosa (7); LuxI and LuxR, V. fischeri (12); TraR, A. tumefaciens (44); and RhiR, R. leguminosarum bv. viciae (11). 

^bPercentages refer to RaiI or RaiR. 

^c—, RhiI has not yet been identified.