Table 1.
Trp operon gene organization and whole genome GC content of 15 microbes from two lineages (12 Bacteria and 3 Archaea) and eight phyla. (*trpF in Mtu and Sco is a bifunctional (hisA-trpF) gene (Barona-Gómez and Hodgson 2003)
| Lineage | Organisms | Number of genes | % GC content |
|---|---|---|---|
| Bacteria | |||
| γ—proteobacteria | Escherichia coli (K-12 MG1655) (Eco) | 5 (trpE-GD-FC-B-A) | 50.8 |
| Salmonella typhi (CT18) (Sty) | 5 (trpE-GD-FC-B-A) | 52.2 | |
| Pseudomonas aeruginosa (PA01) (Pae) | 7 (trpE-G-D-F-C-B-A) | 66.6 | |
| Coxiella burnetti (RSA 493) (Cbu) | 5 (trpE-G-D-BF-A) | 42.6 | |
| α—proteobacteria | Brucella melitensis (16 M) (Bme) | 6 (trpEG-D-F-C-B-A) | 57.2 |
| Mesorhizobium loti (mlr2744) (Mlo) | 6 (trpEG-D-F-C-B-A) | 62.5 | |
| ε—proteobacteria | Helicobacter pylori (26695)(Hpy) | 6 (trpE-G-D-FC-B-A) | 38.9 |
| Thermotogae | Thermotoga maritima (Tma) | 6 (trpE-GD-F-C-B-A) | 46.2 |
| Actinobacteria | Mycobacterium tuberculosis (H37Rv) (Mtu)* | 5 (trpE-D-F-C-B-A) | 65.6 |
| Streptomyces coelicolor (Sco)* | 5 (trpE-G-D-F-C-B-A) | 72.2 | |
| Firmicutes | Bacillus subtilis (00750) (Bsu) | 7 (trpE-G-D-F-C-B-A) | 43.5 |
| Streptococcus pneumoniae (TIGR4) (Spn) | 7 (trpE-G-D-F-C-B-A) | 39.7 | |
| Archaea | |||
| Euryarchaeota | Archaeoglobus fulgidus (Afu) | 6 (trpE-G-C-F-B-A-D) | 48.6 |
| Methanobacterium thermoautotrophicum (Mth) | 7 (trpE-G-D-FC-B-A) | 49.5 | |
| Crenarchaeota | Sulfolobus solfataricus (Sso) | 7 (trpE-G-D-F-C-B-A) | 35.8 |