TABLE 2.

Quorum sensing (QS) protein homologs in SRB as compared to Vibrio harveyi.

SRB	QS protein in Vibrio harveyi	Homologous protein in SRB database	Query cover (%)	E-value
Desulfovibrio salexigens	LuxS	Quorum sensing AI-2, LuxS	100	2E-18
Desulfovibrio alaskensis	LuxP	AI-2 binding perisplatic protein, LuxP precursor	89	2E-105
Desulfotomaculum nigrificans	LuxR	2 components transcriptional regulator, LuxR family	99	5E-42
DVH	LuxO	Sigma54 specific transcriptional regulator	53	4E-82
Desulfovibrio hydrothermalis	LuxS	S-ribosylhomocysteine lyase	100	3E-19
DVH	LuxR	LuxR family transcriptional regulator	93	2E-51
Desulfovibrio hydrothermalis	LuxQ	Signal transduction histidine kinase	31	5E-23
Desulfovibrio salexigens	CqsS	PAS/signal transduction histidine kinase	52	1E-83
Thermodesulfovibrio aggregans	LuxR	LuxR family transcriptional regulator	99	3E-36
Desulfotignum phosphitoxidans	LuxO	Luminescence regulatory protein, LuxO	67	7E-85
Desulfovibrio piezophilus	LuxP	AI-2 binding perisplatic protein, LuxP	95	7E-95

DVH, Desulfovibrio vulgaris Hildenborough.