Table 4 The number of foci encoding R, T and P domains as a function of the number of domains at that focus.
From: The genetic organisation of prokaryotic two-component system signalling pathways
|  | Foci with ≥1: | T | R | P | # of foci |
|---|---|---|---|---|---|
# Domains | 1 | 4660 | 8556 | 664 | 13880 |
in focus | 2 | 12506 | 13353 | 367 | 13420 |
| Â | 3 | 1443 | 1521 | 525 | 1525 |
| Â | 4 | 746 | 758 | 348 | 759 |
| Â | 5+ | 376 | 378 | 197 | 378 |
| Â | Total | 19731 | 24566 | 2101 | Â |