TABLE 1.

Genomes analyzed in this study

Genomea	Abbreviationb	Genome size (Mb)	No. of protein genes	Reference
Aeropyrum pernix	AP	1.67	2,694	31
Aquifex aeolicus	AQ	1.55	1,522	12
Archaeoglobus fulgidus	AF	2.18	2,407	32
Bacillus halodurans	BH	4.20	4,066	64
Bacillus subtilis	BS	4.20	4,100	36
Borrelia burgdorferi	BB	1.44	850	19
Buchnera sp.	BU	0.64	564	57
Campylobacter jejuni	CJ	1.64	1,634	50
Chlamydia pneumoniae CWL029	CP	1.07	1,052	28
Chlamydia trachomatis	CT	1.04	894	62
Deinococcus radiodurans	DR	3.28	3,102	70
Escherichia coli K-12	ECK	4.64	4,289	6
Escherichia coli O157:H7 EDL933	ECO	5.44	5,283	53
Haemophilus influenzae	HI	1.83	1,717	17
Halobacterium sp.	HA	2.57	2,058	46
Helicobacter pylori 26695	HP	1.67	1,566	67
Lactococcus lactis	LL	2.37	2,266	8
Methanococcus jannaschii	MJ	1.73	1,715	9
Methanobacterium thermoautotrophicum	MT	1.75	1,869	60
Mycobacterium tuberculosis H37Rv	MTB	4.41	3,918	11
Mycoplasma genitalium	MG	0.58	467	18
Mycoplasma pneumoniae	MP	0.82	678	26
Neisseria meningitidis MC58	NM	2.27	2,025	66
Pasteurella multocida	PM	2.26	2,014	39
Pseudomonas aeruginosa	PAE	6.26	5,565	63
Pyrococcus abyssi	PA	1.77	1,765	38
Pyrococcus horikoshii	PH	1.74	2,064	30
Rickettsia prowazekii	RP	1.11	834	3
Synechocystis sp.	SS	3.57	3,169	29
Thermoplasma acidophilum	TA	1.56	1,478	54
Thermotoga maritima	TM	1.86	1,846	44
Treponema pallidum	TP	1.14	1,031	20
Ureaplasma urealyticum	UU	0.75	611	21
Vibrio cholerae	VC	4.03	3,828	24
Xylella fastidiosa	XF	2.68	2,766	58
Caenorhabditis elegans	CE	97	17,085	1
Saccharomyces cerevisiae	SC	12	6,297	41

^aStrains are indicated only where more than one was available.

^bSee Fig. 1, 2, and 6.