Table 1.

Type I secretion system components identified in the genome of P. luminescens. The percentage of identity was acquired by BLAST search against known system components; in parenthesis, the organism and the corresponding protein with the highest percentage of identity are provided.

Components	NCBI Accession Number	Number of amino acids	Gene locus on P. luminescens chromosome	Identity (%)	Function/Structure
ABC 1	NP_927979	711 aa	726,383–728,518	57% (Bordetella pertussis CyaB)	Hypothetical protein similar to toxin secretion ATP-binding protein
MFP 1	NP_927980	471 aa	728,660–730,075	36% (Bordetella pertussis CyaD)	Hypothetical protein similar to hemolysin export system MFP HlyD of E. coli
ABC 2	NP_930357	706 aa	3,664,486–3,666,606	46.4% (Bordetella pertussis CyaB)	Hypothetical protein similar to toxin secretion transporter
	NP_930359	719 aa	3,667,994–3,670,153	44.4% (Bordetella pertussis CyaB)	Hypothetical protein similar to toxin secretion transporter
MFP 2	NP_93058	462 aa	3,666,606–3,667,994	36% (Bordetella pertussis CyaD)	Hypothetical protein similar to toxin secretion transporter (MFP)
ABC 3	NP_928641	716 aa	1,546,913–1,549,063	42.3% (Escherichia coli HlyB)	Hypothetical protein similar to unknown protein VC1446 of V. cholerae, probable RTX toxin ABC transporter protein
	NP_928643	701 aa	1,550,414–1,552,519	41.8% (Escherichia coli HlyB)	RtxB (ABC transporter)
MFP 3	NP_928642	451 aa	1,549,066–1,550,421	32.8% (Escherichia coli HlyD)	RTX toxin ABC transporter protein (MFP) RtxD
ABC 4	NP_928002	576 aa	754,786–756,516	70.4% (Serratia marcescens LipB)	ATP-binding protein PrtB
MFP 4	NP_928003	444 aa	756,577–757,911	62.7% (Serratia marcescens LipC)	MFP PrtC
TolC 1	NP_931154	457 aa	4,641,003–4,642,376	64.7% (Escherichia coli TolC)	Outer mebrane channel protein
TolC 2	NP_928004	458 aa	757,911–759,287	50.4% (Serratia marcescens LipD)	Outer membrane protein
TolC 3	NP_929881	492 aa	3,099,833–3,101,311	18.9% (Serratia marcescens LipD)	Hypothetical protein similar to outer membrane factor of ABC transport system