| Organism | Ratio1 | Gene1 | Name1 | Description1 | Ratio2 | Gene2 | Name2 | Description2 | Cofit | Rank |
| Sphingobium sp. HT1-2 | 1.0 | GFF2610 | | TonB-dependent receptor | 1.0 | GFF876 | | Cobalamin biosynthesis protein BluB @ 5,6-dimethylbenzimidazole synthase, flavin destructase family | 0.77 | 1 |
| Alteromonas macleodii MIT1002 | 0.14 | MIT1002_03640 | | Iron-regulated outer membrane proteins | 0.13 | MIT1002_02954 | | Putative NAD(P)H nitroreductase | low | > 70 |
| Pseudomonas sp. BP01 | 0.13 | JOY50_RS11995 | | TonB-dependent receptor | 0.25 | JOY50_RS27950 | bluB | 5,6-dimethylbenzimidazole synthase | — | — |
| Pseudomonas aeruginosa MRSN321 | 0.13 | DY961_RS19175 | | TonB-dependent receptor | 0.29 | DY961_RS06040 | bluB;go_function=oxidoreductase | 5 6-dimethylbenzimidazole synthase | — | — |
| Pseudomonas aeruginosa PUPa3 | 0.13 | DQ20_RS53300 | | TonB-dependent receptor | 0.29 | DQ20_RS46740 | bluB;go_function=oxidoreductase | 5 6-dimethylbenzimidazole synthase | low | > 101 |
| Pseudomonas aeruginosa PA14 | 0.13 | IKLFDK_06500 | | TonB-dependent siderophore receptor | 0.29 | IKLFDK_06040 | | 5 6-dimethylbenzimidazole synthase | — | — |
| Variovorax sp. SCN45 | 0.12 | GFF5856 | | Outer membrane receptor proteins, likely involved in siderophore uptake | 0.29 | GFF443 | | Cobalamin biosynthesis protein BluB @ 5,6-dimethylbenzimidazole synthase, flavin destructase family | low | > 127 |
| Herbaspirillum seropedicae SmR1 | 0.12 | HSERO_RS22405 | | membrane protein | 0.31 | HSERO_RS13250 | | oxygen-insensitive nitroreductase | low | > 78 |
| Ralstonia solanacearum GMI1000 | 0.12 | RS_RS19165 | | TonB-dependent receptor | 0.29 | RS_RS20055 | | 5,6-dimethylbenzimidazole synthase | low | > 80 |
| Pseudomonas orientalis W4I3 | 0.11 | QF045_RS22245 | | TonB-dependent receptor | 0.26 | QF045_RS22170 | | 5,6-dimethylbenzimidazole synthase | low | > 93 |
| Pseudomonas fluorescens FW300-N2E3 | 0.11 | AO353_17970 | | hypothetical protein | 0.27 | AO353_02630 | | 5,6-dimethylbenzimidazole synthase | low | > 101 |
| Ralstonia solanacearum PSI07 | 0.11 | RPSI07_RS01675 | | TonB-dependent receptor | 0.32 | RPSI07_RS02190 | | 5,6-dimethylbenzimidazole synthase | low | > 81 |
| Ralstonia solanacearum IBSBF1503 | 0.11 | RALBFv3_RS21460 | | TonB-dependent siderophore receptor | 0.32 | RALBFv3_RS20550 | | 5,6-dimethylbenzimidazole synthase | low | > 76 |
| Ralstonia solanacearum UW163 | 0.11 | UW163_RS17730 | | TonB-dependent siderophore receptor | 0.32 | UW163_RS18625 | | 5,6-dimethylbenzimidazole synthase | — | — |
| Pseudomonas sp. SVBP6 | 0.09 | COO64_RS17350 | | TonB-dependent receptor | 0.27 | COO64_RS07240 | bluB | 5,6-dimethylbenzimidazole synthase | low | > 93 |
| Pseudomonas putida KT2440 | 0.09 | PP_2193 | | Outer membrane ferric siderophore receptor | 0.27 | PP_1674 | | 5,6-dimethylbenzimidazole synthase | low | > 96 |
Not shown: 21 genomes with orthologs for GFF2610 only; 33 genomes with orthologs for GFF876 only