Chlamydiaceae evolution - Life style and genome size

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Table 2: Genome Size and Life style

Life style	Bacterium	Genome size in millions of base pairs	Reference

Extracellular	Escherichia coli K12 Vibrio cholerae Pseudomonas aeruginosa Bacillus subtilis Clostridium acetobutylicum Deinococcus radiodurans Caulobacter cresentus Synechocystis sp. PCC6803	4.6 4.0 6.3 4.2 4.0 3.3 4.0 3.6	Blattner et al., 1967 Heidelberg et al., 2000 Stover et al., 2000 Kunst et al., 1997 Nolling et al., 2001 White et al., 1999 Nierman et al., 2001 Kaneko & Tabata, 1997

Facultatively intracellular	Salmonella enterica serovar Typhi Yersinia pestis Brucella melitensis Legionella pneumophila Mycobacterium tuberculosis Listeria monocytogenes	4.8 4.7 3.3 3.9 4.4 2.9	Parkhill et al., 2001 Parkhill et al., 2001 del Vechio et al., 2002 Bender et al., 1990 Cole et al., 1998 Glaser et al., 2001

Extremophile	Aeropyrum pernix Methanococcus janneschi Acheoglobus fulgidus Thermatoga maritima Aquifex aeolius Halobacterium sp. NRC1	1.7 1.7 2.2 1.9 1.6 2.6	Kawarabashyi et al., 1999 Bult et al., 1996 Klenk et al., 1997 Nelson et al., 1999 Deckert et al., 1998 Ng et al., 2001

Epicellular	Neisseria meningitidis Haemophilus influenzae Mycoplasma genitalium Mycoplasma pneumoniae Ureaplasma urealyticum Mycoplasma pulmonis Borrelia burgdorferi Treponema pallidum Helicobacter pylori Pasteurella multocida Streptococcus pyogenes	2.2 1.8 0.6 0.8 0.8 1.0 0.9 1.1 1.7 2.3 1.9	Parkhill et al., 2000 Tetellin et al., 2000 Fleischmann et al., 1995 Fraser et al., 1995 Himmelreich et al., 1996 Glass et al., 2000 Chamboud et al., 2001 Fraser et al., 1997 Fraser et al., 1998 Tomb et al., 1997 May et al., 2001 Ferretti et al., 2000

Obligately intracellular symbiotic	Buchnera sp. APS Wolbachia spp. Wigglesworthia glossinidia Sodalis glossinidius	0.6 1.0 - 1.7^1,3 0.8² 2.0²	Shigenobu et al., 2000 Sun et al., 2001 Akman & Aksoy, 2001 Akman et al., 2001

Obligately intracellular parasitic	Rickettsia prowazekii Rickettsia conorii Ehrlichia chaffensis Cowdria ruminantium Coxiella burnetii Chlamydia trachomatis Chlamydophila pneumoniae Simkania negevensis	1.1 1.3 1.2¹ 1.6¹ 2.1¹ 1.1 1.3 1.7¹	Andersson et al., 1998 Ogata et al., 2001 Rydkina et al., 1999 de Villiers et al., 2000 Willems et al., 1998 Stephens et al., 1998 Read et al., 2000 Kalman et al., 1999 Read et al., 2000 Shirai et al., 2000 Kahane et al., 1999

¹ Genome size estimated by Pulsed Field Gel Electrophoresis
² Genome size estimated by hybridization of E. coli gene arrays
Other genome sizes from complete genome sequence
³ Some species parasitic, others symbiotic

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