| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P0AEL0 | Formate dehydrogenase, cytochrome b556(fdo) subunit; Aerobic formate dehydrogenase cytochrome b556 subunit; FDH-Z subunit gamma; Formate dehydrogenase-O subunit gamma; | fdoI; b3892 JW3863; | NP_418328.1;YP_491558.1; | 211 | escherichia-coli |
| P0AAJ5 | Formate dehydrogenase-O iron-sulfur subunit; Aerobic formate dehydrogenase iron-sulfur subunit; FDH-Z subunit beta; Formate dehydrogenase-O subunit beta; | fdoH; b3893 JW3864; | NP_418329.1;YP_491557.1; | 300 | escherichia-coli |
| P32176 | Formate dehydrogenase-O major subunit; EC 1.2.1.2; Aerobic formate dehydrogenase major subunit; FDH-Z subunit alpha; Formate dehydrogenase-O subunit alpha; | fdoG; b3894 JW3865; | NP_418330.1;YP_491556.1; | 1016 | escherichia-coli |
| Q47208 | Protein FdrA; | fdrA; ylbD; b0518 JW0506; | NP_415051.1;YP_488808.1; | 555 | escherichia-coli |
| P80668 | Phenylacetaldehyde dehydrogenase; PAD; EC 1.2.1.39; | feaB; maoB padA ydbG; b1385 JW1380; | NP_415903.4;YP_489654.1; | 499 | escherichia-coli |
| Q47129 | Transcriptional activator FeaR; | feaR; maoB maoR ydbM; b1384 JW1379; | NP_415902.1;YP_489653.1; | 301 | escherichia-coli |
| P15030 | Fe(3+) dicitrate transport system permease protein FecC; Iron(III) dicitrate transport system permease protein FecC; | fecC; b4289 JW4249; | NP_418709.1;YP_492421.1; | 332 | escherichia-coli |
| P15028 | Fe(3+) dicitrate-binding periplasmic protein; Iron(III) dicitrate-binding periplasmic protein; | fecB; b4290 JW4250; | NP_418710.4;YP_492422.1; | 300 | escherichia-coli |
| P23484 | Probable RNA polymerase sigma factor FecI; | fecI; b4293 JW4253; | NP_418713.1;YP_492425.1; | 173 | escherichia-coli |
| P13036 | Fe(3+) dicitrate transport protein FecA; Iron(III) dicitrate transport protein FecA; | fecA; b4291 JW4251; | NP_418711.1;YP_492423.1; | 774 | escherichia-coli |
| P23485 | Protein FecR; | fecR; b4292 JW4252; | NP_418712.1;YP_492424.1; | 317 | escherichia-coli |
| P15031 | Fe(3+) dicitrate transport ATP-binding protein FecE; Iron(III) dicitrate transport ATP-binding protein FecE; | fecE; b4287 JW4247; | NP_418707.1;YP_492419.1; | 255 | escherichia-coli |
| P15029 | Fe(3+) dicitrate transport system permease protein FecD; Iron(III) dicitrate transport system permease protein FecD; | fecD; b4288 JW4248; | NP_418708.1;YP_492420.1; | 318 | escherichia-coli |
| P28861 | Ferredoxin--NADP reductase; FNR; EC 1.18.1.2; DA1; Flavodoxin reductase; FLDR; FLXR; Methyl viologen resistance protein A; | fpr; mvrA; b3924 JW3895; | NP_418359.1;YP_491527.1; | 248 | escherichia-coli |
| P0AEL3 | Ferrous iron transport protein A; | feoA; b3408 JW3371; | NP_417867.1;YP_492024.1; | 75 | escherichia-coli |
| P33650 | Ferrous iron transport protein B; | feoB; b3409 JW3372; | NP_417868.1;YP_492023.1; | 773 | escherichia-coli |
| P64638 | Ferrous iron transport protein C; | feoC; yhgG; b3410 JW3373; | NP_417869.1;YP_492022.1; | 78 | escherichia-coli |
| P0AEL6 | Ferrienterobactin-binding periplasmic protein; | fepB; b0592 JW0584; | NP_415124.1;YP_488881.1; | 318 | escherichia-coli |
| P05825 | Ferrienterobactin receptor; Enterobactin outer-membrane receptor; | fepA; fep feuB; b0584 JW5086; | NP_415116.1;YP_488872.1; | 746 | escherichia-coli |
| P23878 | Ferric enterobactin transport ATP-binding protein FepC; | fepC; b0588 JW0580; | NP_415120.1;YP_488877.1; | 271 | escherichia-coli |
