Bacterial Chromosomal and Plasmid Genomes Examined in This Study.
| Organism or Plasmid (Strain or Serogroup Designation) | Genome Size (bp) | Characteristic | GC Content (%) |
| Aeropyrum pernix(K1) | 1,669,695 | Archaea | 56.3 |
| Aquifex aeolicus (VF5) | 1,551,335 | Thermophilic bacteria | 43.5 |
| Bacillus halodurans(C-125) | 4,202,352 | Gram positive bacilli | 43.7 |
| Bacillus subtilis (168) | 4,214,814 | Gram positive bacilli | 43.5 |
| Campylobacter jejuni(NCTC11168) | 1,641,481 | Gram negative spiral bacilli | 30.6 |
| Chlamydia pneumoniae(CWL029) | 1,230,230 | Obligate eubacterial parasite | 40.6 |
| Chlamydia trachomatis (serovar D) | 1,042,519 | Obligate eubacterial parasite | 41.3 |
| Deinococcus radiodurans (R1) | 2,648,638[i] | Gram positive cocci | 67.0 |
| Chromosome 2 | 412,348 | 66.7 | |
| MP1 | 177,466 | Megaplasmid | 63.2 |
| CP1 | 45,704 | Plasmid | 56.2 |
| Escherichia coli (K12-MG1655) | 4,639,221 | Gram negative bacilli | 50.8 |
| Escherichia coli(O157:H7-EDL933) | 5,529,376 | Gram negative bacilli | 50.4 |
| pO157 | 92,084 | Plasmid | 47.6 |
| Haemophilus influenzae (KW20) | 1,830,138 | Gram negative bacilli | 38.2 |
| Helicobacter pylori (J99) | 1,643,831 | Gram negative spiral bacilli | 39.2 |
| Helicobacter pylori(26695) | 1,667,867 | Gram negative spiral bacilli | 38.9 |
| Lactococcus lactis(IL1403) | 2,365,589 | Gram positive cocci | 35.3 |
| Methanobacterium thermoautotrophicum | 1,751,377 | Archaea | 49.5 |
| (delta H) | |||
| Methanococcus janaschii(DSM2661) | 1,664,970 | Archaea | 31.3 |
| Mycobacterium leprae(TN) | 3,268,203 | Acid fast bacteria | 57.8 |
| Mycobacterium tuberculosis (H37RV) | 4,411,529 | Acid fast bacteria | 65.6 |
| Mycoplasma genitalium(G-37) | 580,074 | Obligate eubacterial parasite | 31.6 |
| Mycoplasma pneumoniae(M129) | 816,394 | Obligate eubacterial parasite | 49.9 |
| Neisseria meningitidis (serogroup A) | 2,184,406 | Gram negative cocci | 51.8 |
| Neisseria meningitidis (serogroup B) | 2,272,325 | Gram negative cocci | 51.5 |
| Pyrococcus abyssi (GE5) | 1,765,118 | Archaea | 44.9 |
| Pyrococcus horikoshii (OT3) | 1,738,505 | Archaea | 42.0 |
| Rickettsia prowazekii (Madrid E) | 1,111,523 | Spirochaete | 28.9 |
| Salmonella typhi | 4,809,037 | Gram negative bacilli | 52.1 |
| Synechocystis sp. (PCC6803) | 3,573,470 | Cyanobacteria | 47.7 |
| Thermotoga maritima (MSB8) | 1,860,725 | Thermophilic bacteria | 46.3 |
| Vibrio cholerae (El Tor N16961) | 2,961,149[i] | Gram negative curved bacilli | 47.7 |
| Chromosome 2 | 1,072,315 | 46.9 | |
| Yersinia pestis(CO92) | 4,653,728 | Gram negative bacilli | 47.6 |
| pCD1 | 70,559 | Plasmid | 44.8 |
[i] The larger chromosome was designated as chromosome 1.