| Alphabet | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Full list |
| Plasmid list |
| Chromosome list |
| Only T4SS-containing replicons are listed |
| # | Replicon | Taxonomy ID | T4SS number |
Number of relevant effectors * |
| 1 | Wolbachia endosymbiont of Culex quinquefasciatus Pel chromosome | 570417 | 1 | 0 |
| 2 | Wolbachia endosymbiont of Drosophila melanogaster chromosome | 163164 | 1 [1  ] | 0 |
| 3 | Wolbachia endosymbiont strain TRS of Brugia malayi chromosome | 292805 | 1 | 15 [15 ] |
| 4 | Wolinella succinogenes DSM 1740 chromosome | 273121 | 1 | 0 |
| 5 | Wolbachia sp. wRi chromosome | 66084 | 1 [1 ] | 0 | Total | 0  , 0  , 0  | 5 [2 ] | 15 [15 ] |
| Number of T4SSs that are from experimental literatures | ||||
| Number of T4Ses that are from experimental literatures | ||||
| * Number of effecters that can be delivered by T4SS(s) encoded by the replicon. In some cases, effectors are not encoded by the same replicon that coding for T4SS. | ||||