| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P77747 | Outer membrane protein N; Porin OmpN; | ompN; ynaG; b1377 JW1371; | NP_415895.1;YP_489645.1; | 377 | escherichia-coli |
| P0AA16 | Transcriptional regulatory protein OmpR; | ompR; kmt ompB; b3405 JW3368; | NP_417864.1;YP_492027.1; | 239 | escherichia-coli |
| P09169 | Protease 7; EC 3.4.23.49; Omptin; Outer membrane protein 3B; Protease A; Protease VII; | ompT; b0565 JW0554; | NP_415097.1;YP_488852.1; | 317 | escherichia-coli |
| P0A915 | Outer membrane protein W; | ompW; yciD; b1256 JW1248; | NP_415772.1;YP_489524.1; | 212 | escherichia-coli |
| P0A917 | Outer membrane protein X; | ompX; ybiG; b0814 JW0799; | NP_415335.1;YP_489087.1; | 171 | escherichia-coli |
| P27298 | Oligopeptidase A; EC 3.4.24.70; | prlC; opdA; b3498 JW3465; | NP_417955.1;YP_491937.1; | 680 | escherichia-coli |
| P39401 | Phosphoglycerol transferase I; EC 2.7.8.20; Phosphatidylglycerol--membrane-oligosaccharide glycerophosphotransferase; | mdoB; opgB yjjO; b4359 JW5794; | NP_418779.2;YP_492490.1; | 763 | escherichia-coli |
| P75920 | Glucans biosynthesis protein C; EC 2.1.-.-; | mdoC; opgC ymdD; b1047 JW1034; | NP_415565.1;YP_489316.1; | 385 | escherichia-coli |
| P40120 | Glucans biosynthesis protein D; | mdoD; opgD ydcG yzzZ; b1424 JW1420; | NP_415941.5;YP_489690.1; | 551 | escherichia-coli |
| P75785 | Phosphoethanolamine transferase OpgE; EC 2.7.-.-; | opgE; ybiP; b0815 JW0800; | NP_415336.1;YP_489088.1; | 527 | escherichia-coli |
| P33136 | Glucans biosynthesis protein G; | mdoG; opgG; b1048 JW1035; | NP_415566.1;YP_489317.1; | 511 | escherichia-coli |
| P62517 | Glucans biosynthesis glucosyltransferase H; EC 2.4.1.-; | mdoH; opgH; b1049 JW1037; | NP_415567.1;YP_489318.1; | 847 | escherichia-coli |
| P23843 | Periplasmic oligopeptide-binding protein; | oppA; b1243 JW1235; | NP_415759.1;YP_489511.1; | 543 | escherichia-coli |
| P0AFH2 | Oligopeptide transport system permease protein OppB; | oppB; b1244 JW1236; | NP_415760.1;YP_489512.1; | 306 | escherichia-coli |
| P0AFH6 | Oligopeptide transport system permease protein OppC; | oppC; b1245 JW1237; | NP_415761.1;YP_489513.1; | 302 | escherichia-coli |
| P77737 | Oligopeptide transport ATP-binding protein OppF; | oppF; b1247 JW1239; | NP_415763.1;YP_489515.1; | 334 | escherichia-coli |
| P76027 | Oligopeptide transport ATP-binding protein OppD; | oppD; b1246 JW1238; | YP_025300.1;YP_489514.1; | 337 | escherichia-coli |
| P0A784 | Oligoribonuclease; EC 3.1.-.-; | orn; o204a yjeR; b4162 JW5740; | NP_418586.4;YP_492307.1; | 181 | escherichia-coli |
| P64453 | Orphan toxin OrtT; | ortT; ydcX; b1445 JW5232; | NP_415962.2;YP_489710.1; | 57 | escherichia-coli |
| P0C0L2 | Peroxiredoxin OsmC; EC 1.11.1.15; Osmotically-inducible protein C; | osmC; b1482 JW1477; | NP_415999.1;YP_489747.1; | 143 | escherichia-coli |
