| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P11519 | Protein FlmC; F-plasmid maintenance protein C; | flmC; ECOK12F065; | NP_061444.1;WP_001306679.1;YP_009075979.1; | 70 | escherichia-coli |
| P62670 | Stable plasmid inheritance protein; F leading maintenance protein; | flmA; parB stm; ECOK12F066; | NP_061445.1;YP_001816514.1;YP_009071221.1;YP_009075980.1; | 52 | escherichia-coli |
| P77609 | Protein FlxA; | flxA; b1566 JW1558; | NP_416084.1;YP_489830.1; | 110 | escherichia-coli |
| P23882 | Methionyl-tRNA formyltransferase; EC 2.1.2.9; | fmt; yhdD; b3288 JW3249; | NP_417746.1;YP_492145.1; | 315 | escherichia-coli |
| P0A9E5 | Fumarate and nitrate reduction regulatory protein; | fnr; nirR; b1334 JW1328; | NP_415850.1;YP_489604.1; | 250 | escherichia-coli |
| P0AC23 | Probable formate transporter 1; Formate channel 1; | focA; ycaE; b0904 JW0887; | NP_415424.1;YP_489176.1; | 285 | escherichia-coli |
| P77733 | Probable formate transporter 2; Formate channel 2; | focB; b2492 JW2477; | NP_416987.1;YP_490720.1; | 282 | escherichia-coli |
| P0AC16 | Dihydroneopterin aldolase; DHNA; EC 4.1.2.25; | folB; ygiG; b3058 JW3030; | NP_417530.2;YP_491250.1; | 122 | escherichia-coli |
| P08192 | Bifunctional protein FolC; EC 6.3.2.12; Tetrahydrofolate synthase; Tetrahydrofolylpolyglutamate synthase; FPGS; Folylpoly-gamma-glutamate synthetase; EC 6.3.2.17; | folC; dedC; b2315 JW2312; | NP_416818.1;YP_490557.1; | 422 | escherichia-coli |
| P24186 | Bifunctional protein FolD; EC 3.5.4.9; EC 1.5.1.5; | folD; ads; b0529 JW0518; | NP_415062.1;YP_488818.1; | 288 | escherichia-coli |
| P0AFS3 | Dihydrofolate reductase FolM; DHFR; EC 1.5.1.3; | folM; ydgB; b1606 JW1598; | NP_416123.1;YP_489869.1; | 240 | escherichia-coli |
| P0AC19 | D-erythro-7,8-dihydroneopterin triphosphate epimerase; EC 5.-.-.-; Dihydroneopterin triphosphate 2'-epimerase; | folX; b2303 JW2300; | NP_416806.1;YP_490545.1; | 120 | escherichia-coli |
| P05523 | Formamidopyrimidine-DNA glycosylase; Fapy-DNA glycosylase; EC 3.2.2.23; DNA-(apurinic or apyrimidinic site) lyase MutM; AP lyase MutM; EC 4.2.99.18; | mutM; fpg; b3635 JW3610; | NP_418092.1;YP_491798.1; | 269 | escherichia-coli |
| P00363 | Fumarate reductase flavoprotein subunit; EC 1.3.5.4; | frdA; b4154 JW4115; | NP_418578.1;YP_492299.1; | 602 | escherichia-coli |
| P0AC47 | Fumarate reductase iron-sulfur subunit; EC 1.3.5.1; | frdB; b4153 JW4114; | NP_418577.1;YP_492298.1; | 244 | escherichia-coli |
| P0A8Q0 | Fumarate reductase subunit C; Fumarate reductase 15 kDa hydrophobic protein; | frdC; b4152 JW4113; | NP_418576.1;YP_492297.1; | 131 | escherichia-coli |
| P0A8Q3 | Fumarate reductase subunit D; Fumarate reductase 13 kDa hydrophobic protein; | frdD; b4151 JW4112; | NP_418575.1;YP_492296.1; | 119 | escherichia-coli |
| P0AEN1 | NAD(P)H-flavin reductase; EC 1.16.1.3; EC 1.5.1.41; Aquacobalamin reductase; FMN reductase; Ferrisiderophore reductase C; NAD(P)H:flavin oxidoreductase; Riboflavin reductase [NAD(P)H]; | fre; fadI flrD fsrC ubiB; b3844 JW3820; | NP_418286.1;YP_491600.1; | 233 | escherichia-coli |
| P45539 | Putative fructoselysine transporter FrlA; | frlA; yhfM; b3370 JW3333; | NP_417829.2;YP_492061.1; | 445 | escherichia-coli |
| P45541 | Protein FrlC; | frlC; yhfO yhfP; b4474 JW5699; | YP_026213.1;YP_492059.1; | 276 | escherichia-coli |
