Table 1. Gene product annotations of the predicted members of the DNR, FixK, and FNR regulons determined from the comparative genomics analysis of α-proteobacteria.
| ID1 | Gene product annotation2 | Rsph locus3 | |
| DNR | |||
| 616 | 50S ribosomal protein L4 | RSP1717 | |
| 689 | 50S ribosomal protein L23 | RSP1718 | |
| 1300 | putative universal stress family protein, UspA | RSP3802 | |
| 1696 | heme- and copper-containing membrane protein, NnrS | RSP0328 | |
| 1847 | transcription factor, DNR | ||
| * | 2800 | peptidase U32 family | RSP0465 |
| 2903 | respiratory nitrate reductase alpha-subunit | ||
| * | 2966 | putative lipid carrier protein | RSP0466 |
| 3120 | respiratory nitrate reductase beta-subunit | ||
| 4023 | respiratory nitrate reductase delta-subunit | ||
| 4488 | putative nitrite transporter | ||
| FixK | |||
| 114 | response regulator receiver protein, FixJ | RSP0907 | |
| 321 | putative ABC transporter ATP binding protein | RSP1628 | |
| 329 | putative ABC transporter permease protein | RSP2459 | |
| 332 | PAS/PAC sensor signal transduction histidine kinase, FixL | RSP0909 | |
| 1387 | putative ABC transporter periplasmic substrate binding protein | RSP2811 | |
| 1551 | heat shock protein Hsp20 | ||
| 1862 | putative HlyD family secretion protein | RSP3160 | |
| 2072 | putative ABC transporter permease protein | RSP3157 | |
| 2238 | putative phosphoketolase | ||
| 2256 | putative signal transduction protein with CBS domains | ||
| 2518 | putative ABC transporter subunit | RSP3159 | |
| 2551 | cytochrome c class I | ||
| 2589 | putative kinase | RSP0470 | |
| 2810 | hypothetical protein | ||
| 2855 | putative xanthine and cobalt dehydrogenase maturation factor | RSP1934 | |
| 3100 | putative Zinc binding alcohol dehydrogenase | ||
| 3532 | hypothetical protein | ||
| 5478 | hypothetical protein | ||
| FNR | |||
| * | 28 | putative heavy metal translocating P-type ATPase | RSP0690 |
| * | 74 | glutamyl-tRNA reductase | RSP2984 |
| * | 125 | cytochrome c oxidase subunit I | RSP1877 |
| * | 129 | putative universal stress protein, UspA | RSP0697 |
| * | 219 | cytochrome c oxidase subunit II | RSP1826 |
| * | 301 | transcriptional regulator, FNR/FixK | RSP0698 |
| 555 | putative dimethyladenosine transferase | RSP2905 | |
| 1083 | putative peptidase U62 modulator of DNA gyrase | RSP1825 | |
| * | 1230 | oxygen-independent coproporphyrinogen III oxidase | RSP0699 |
| * | 1264 | iron-sulfur binding protein RdxA/RdxB/FixG family | RSP0692 |
| * | 1289 | cytochrome c oxidase cbb3-type subunit III | RSP0693 |
| * | 1331 | cytochrome c oxidase cbb3-type subunit I | RSP0696 |
| * | 1348 | cytochrome c oxidase cbb3-type subunit III | RSP0695 |
| * | 1758 | trans-membrane cation transporter, FixH family | RSP0691 |
| * | 1774 | putative outer membrane protein, OmpW | RSP2507 |
| * | 1915 | cytochrome oxidase maturation protein cbb3-type | RSP0689 |
| * | 1987 | putative protoporphyrin monomethyl-ester oxidative cyclase | RSP0281 |
| * | 2282 | cytochrome c oxidase cbb3 type subunit IV | RSP0694 |
| 2905 | hypothetical protein | ||
| * | 3768 | putative DnaK suppressor protein | RSP0166 |
*Genes for which promoter regions have been shown to be bound by FnrL in R. sphaeroides in this study.
1Arbitrary ID numbers given to the sets of orthologous genes determined across the 87 α-proteobacteria.
2Functional annotation resulting from the consensus of all the annotations of the genes constituting each set of orthologs.
3Locus ID of R. sphaeroides genes if one is present in the sets of orthologs.