| P0ACT4 | n/a | 6yr1 | T1C | AAA | 301 | e6yr1AAA1 | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | TetR_C_1 |
| P0ACT4 | n/a | 6yr1 | T1C | AAA | 301 | e6yr1AAA2 | HTH | HTH | Three-helical HTH | TetR_N |
| P0ACT4 | n/a | 6yr2 | T1C | BBB | 1001 | e6yr2AAA1 | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | TetR_C_1 |
| P0ACT4 | n/a | 6yr2 | T1C | BBB | 1001 | e6yr2BBB1 | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | TetR_C_1 |
| P0ACT4 | n/a | 6yr2 | T1C | BBB | 1001 | e6yr2BBB2 | HTH | HTH | Three-helical HTH | TetR_N |