TABLE 2.

Lack of specific regulation of genes implicated in respiration chain activity^a

Function and geneb	ORF descriptionc	Ratio
		Aero/Stat	Resp/Stat
Heme synthesis or utilization
fhuB	Ferrichrome ABC transporter permease protein	1	2
fhuD†	Ferrichrome ABC transporter substrate-binding protein	1	2
fhuG	Ferrichrome ABC transporter permease protein	1	2
fhuR†	fhu operon transcriptional regulator	1	1
hemH†	Ferrochelatase	1	1
hemK	Protoporphyrinogen oxidase	2	1
hemN	O2-independent coproporphyrogen III oxidase	2	2
Electron donor
noxB†	Putative membrane NADH dehydrogenase	1	1
Electron transfer
menB†	Naphthoate synthase	3	2
menD	2-Oxoglutarate decarboxylase/2-succinyl-6- hydroxy-2,4-cyclohexadiene-1-carboxylate synthase	2	2
menE	O-Succinylbenzoic acid-CoA ligase	2	2
menF	Menaquinone-specific isochorismate synthase	2	2
menX	Protein in menaquinone biosynthesis pathway	2	2
yhdB	O-Succinylbenzoate-CoA synthase (menC)	2	2
ybiG	Probable 1,4-dihydroxy-2-naphthoate octaprenyltransferase (menH)	3	3
yljG	Probable SAM-dependent methyltransferase (menA)	1	1
ispA	Geranyltranstransferase: MK tail addition	1	1
ispB	Heptaprenyl diphosphate synthase component II: MK tail addition	1	1
Electron acceptor
cydA†	Cytochrome bd-I oxidase subunit I	1	1
cydB†	Cytochrome d ubiquinol oxidase subunit II	1	1
cydC†	Cytochrome d ABC transporter ATP-binding and permease protein	1	1
cydD	Cytochrome d ABC transporter ATP-binding and permease protein	1	1

^aSee Table 1 legend.

^b†, Genes whose implication in respiration was tested experimentally (noxB and cydC) (14, 21; P. Gaudu, L. Rezaïki, and L. Hebert, unpublished data).

^cORF, open reading frame.