| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P76023 | Putative uncharacterized protein YchS; | ychS; b1228 JW5881; | YP_489498.1; | 91 | escherichia-coli |
| P0A710 | Probable intracellular septation protein A; | yciB; ispZ; b1254 JW1246; | NP_415770.1;YP_489522.1; | 179 | escherichia-coli |
| P21365 | UPF0259 membrane protein YciC; | yciC; b1255 JW1247; | NP_415771.1;YP_489523.1; | 247 | escherichia-coli |
| P21363 | Protein YciE; | yciE; b1257 JW1249; | NP_415773.1;YP_489525.1; | 168 | escherichia-coli |
| P21362 | Protein YciF; | yciF; b1258 JW1250; | NP_415774.1;YP_489526.1; | 166 | escherichia-coli |
| P21361 | Uncharacterized protein YciG; | yciG; b1259 JW1251; | NP_415775.4;YP_489527.1; | 59 | escherichia-coli |
| P08245 | Uncharacterized protein YciH; | yciH; b1282 JW1274; | NP_415798.2;YP_489550.1; | 108 | escherichia-coli |
| P0AB55 | Protein YciI; | yciI; b1251 JW1243; | NP_415767.2;YP_489519.1; | 98 | escherichia-coli |
| P31808 | Uncharacterized oxidoreductase YciK; EC 1.-.-.-; | yciK; b1271 JW1263; | NP_415787.1;YP_489539.1; | 252 | escherichia-coli |
| P45848 | Uncharacterized protein YciQ; | yciQ; yciP; b1268 JW5197; | NP_415784.1;YP_489536.1; | 631 | escherichia-coli |
| P0AB61 | Protein YciN; | yciN; b1273 JW1265; | NP_415789.1;YP_489541.1; | 83 | escherichia-coli |
| P76034 | Uncharacterized HTH-type transcriptional regulator YciT; | yciT; b1284 JW1276; | NP_415800.1;YP_489552.1; | 249 | escherichia-coli |
| P0AFR4 | Uncharacterized protein YciO; | yciO; b1267 JW5196; | NP_415783.6;YP_489535.1; | 206 | escherichia-coli |
| P0A8L7 | UPF0263 protein YciU; | yciU; b1248 JW1240; | NP_415764.4;YP_489516.1; | 109 | escherichia-coli |
| P76035 | Uncharacterized protein YciW; | yciW; b1287 JW5200; | NP_415803.2;YP_489555.1; | 375 | escherichia-coli |
| P58094 | Uncharacterized protein YciX; | yciX; b4523 JW5198/JW5199; | YP_588450.2; | 55 | escherichia-coli |
| A5A614 | UPF0509 protein YciZ; | yciZ; b4596 JW1277; | YP_001165317.1; | 57 | escherichia-coli |
| P0A8R7 | UPF0283 membrane protein YcjF; | ycjF; b1322 JW1315; | NP_415838.1;YP_489591.1; | 353 | escherichia-coli |
| P45736 | Uncharacterized protein YcjD; | ycjD; b1289 JW1282; | NP_415805.1;YP_489557.1; | 117 | escherichia-coli |
| P77716 | Inner membrane ABC transporter permease protein YcjP; | ycjP; b1312 JW1305; | NP_415828.1;YP_489580.1; | 280 | escherichia-coli |
