TABLE 2.
N(-1) composition of bacterial and archael species
| Species | %Aa | %G | %C | %Tb | tRNAsc | log(pT)d |
| Bacteria | ||||||
| Aquifex aeolicus | 84(38) | 2(19) | 5(12) | 9(32) | 44 | −3.5 |
| Bacillus subtilis | 13(35) | 3(8) | 16(17) | 67(40) | 86 | −6.7 |
| Borrelia burgdorferi | 21(24) | 6(22) | 0(31) | 73(24) | 33 | −2.8 |
| Bacillus halodurans C-125 | 13(24) | 5(22) | 43(31) | 40(24) | 63 | −2.6 |
| Buchnera sp. APS | 44(47) | 6(5) | 3(4) | 47(44) | 32 | −0.9 |
| Campylobacter jejuni | 19(29) | 5(7) | 9(14) | 67(51) | 43 | −1.9 |
| Caulobacter crescentus | 20(18) | 10(30) | 29(34) | 41(19) | 51 | −3.8 |
| Chlamydia pneumoniae CWL029 | 13(24) | 11(12) | 21(18) | 55(45) | 38 | −1.2 |
| Chlamydia trachomatis D/UW-3/Cx | 14(15) | 3(13) | 24(23) | 59(49) | 37 | −1.2 |
| Deinococcus radiodurans | 16(19) | 4(24) | 31(30) | 49(27) | 49 | −3.31 |
| Escherichia coli K12 | 13(26) | 7(17) | 20(28) | 60(28) | 88 | −9.51 |
| Haemophilus influenzae Rd | 9(31) | 4(11) | 26(20) | 61(37) | 57 | −3.91 |
| Helicobacter pylori 26695 | 25(31) | 14(16) | 6(6) | 56(48) | 36 | −1.1 |
| Mycobacterium leprae TN | 27(26) | 31(26) | 29(25) | 13(23) | 45 | −1.4 |
| Mycobacterium tuberculosis | 29(23) | 18(26) | 40(31) | 13(21) | 45 | −1.1 |
| Mycoplasma genitalium G37 | 33(39) | 6(10) | 6(18) | 56(33) | 36 | −2.6 |
| Neisseria meningitidis Z2491 | 15(30) | 20(18) | 35(22) | 30(30) | 46 | −0.9 |
| Pasteurella multocida | 12(32) | 2(13) | 30(18) | 56(37) | 57 | −2.9 |
| Pseudomonas aeruginosa PA01 | 13(24) | 5(22) | 43(31) | 40(24) | 63 | −2.6 |
| Rickettsia prowazekii Madrid E | 39(38) | 3(6) | 3(9) | 55(46) | 33 | −1.1 |
| Staphylococcus aureus N315 | 32(39) | 6(6) | 8(11) | 53(44) | 62 | −1.4 |
| Synechocystis PCC6803 | 32(35) | 7(17) | 22(25) | 39(23) | 41 | −1.2 |
| Thermotoga maritima | 13(27) | 22(36) | 11(14) | 54(23) | 46 | −5.6 |
| Treponema pallidum | 20(13) | 16(30) | 24(28) | 40(28) | 45 | −1.6 |
| Ureaplasma urealyticum | 7(28) | 3(8) | 0(17) | 90(47) | 30 | −6.2 |
| Vibrio cholerae | 8(34) | 2(15) | 27(21) | 63(30) | 98 | −11.1 |
| Xylella fastidiosa | 28(25) | 12(20) | 26(21) | 34(35) | 50 | −0.9 |
| Archaea | ||||||
| Aeropyrum pernix | 16(22) | 28(42) | 14(18) | 42(19) | 50 | −4.1 |
| Archaeoglobus fulgidis 2595 | 78(34) | 11(18) | 2(21) | 9(27) | 46 | −2.8 |
| Methanobacterium_thermoautotrophicum_delta H | 15(29) | 21(17) | 3(18) | 62(37) | 39 | −3.0 |
| Methanococcus jannaschii | 35(28) | 8(25) | 5(9) | 51(39) | 37 | −1.4 |
| Pyrobaculum aerophilum | 50(33) | 35(25) | 13(24) | 2(18) | 46 | −3.0 |
| Pyrococcus abyssi | 26(19) | 2(35) | 20(18) | 52(28) | 46 | −3.6 |
| Pyrococcus furiosus DSM 3638 | 17(21) | 2(33) | 15(13) | 65(33) | 46 | −5.1 |
| Pyrococcus horikoshii OT3 | 19(19) | 4(35) | 13(14) | 64(32) | 47 | −5.2 |
| Sulfolobus solfataricus | 15(37) | 13(16) | 11(8) | 61(39) | 46 | −2.8 |
| Sulfolobus tokodaii | 11(32) | 11(14) | 7(11) | 71(43) | 45 | −4.0 |
| Thermoplasma acidophilum | 33(29) | 9(22) | 16(19) | 42(30) | 45 | −1.5 |
| Thermoplasma volcanium | 31(29) | 4(20) | 13(16) | 51(35) | 45 | −2.0 |
aPercent base composition at N(-1). Parenthetical values are the average composition upstream of tRNA genes (see Materials and Methods).
bValues in bold indicate species with enrichment of U at N(-1).
cValues indicate the number of known tRNA genes in the species.
dIndicated values are the log of the probability of finding the given number of U residues in a random sample, based on the average composition (see Materials and Methods). Values in bold indicate species where U enrichment is significant (p < 0.01).