Table 2. Distribution of types of E.coli gene products.
| Gene type | Experimental | By similarity | Total (%) |
|---|---|---|---|
| Enzymes | 1067 | 496 | 1563 (35.5) |
| Transporters | 330 | 264 | 594 (13.5) |
| Regulators | 223 | 144 | 367 (8.3) |
| Membrane proteins | 56 | 183 | 239 (5.4) |
| Structural proteins | 88 | 36 | 124 (2.8) |
| Protein factors | 110 | 33 | 143 (3.3) |
| Carrier proteins | 33 | 28 | 61 (1.4) |
| Leader peptides | 12 | 12 (0.3) | |
| RNAs | 116 | 116 (2.6) | |
| External origin | 312 | 312 (7.1) | |
| Phenotypesa | 293 (6.7) | ||
| Unknown function | 578 (13.1) | ||
| Total | 2347 | 1184 | 4400 |
aIncludes gene products with domain function assignments.