| P0ACT4 | DB14546 | 2o7o | SO4 | A | 301 | e2o7oA1 | HTH | HTH | Three-helical HTH | TetR_N |
| P0ACT4 | DB14546 | 2o7o | SO4 | A | 301 | e2o7oA2 | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | TetR_C_1 |
| P0ACT4 | DB14546 | 2xpu | SO4 | A | 1212 | e2xpuA1 | HTH | HTH | Three-helical HTH | TetR_N |
| P0ACT4 | DB14546 | 2xpu | SO4 | A | 1212 | e2xpuA2 | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | TetR_C_1 |
| P0ACT4 | DB14546 | 4d7m | SO4 | A | 301 | e4d7mA1 | HTH | HTH | Three-helical HTH | TetR_N |
| P0ACT4 | DB14546 | 4d7m | SO4 | A | 301 | e4d7mA2 | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain | TetR_C_1 |
| P0ACT4 | DB14546 | 6yr2 | SO4 | AAA | 301 | e6yr2AAA2 | HTH | HTH | Three-helical HTH | TetR_N |
| P0ACT4 | DB14546 | 6yr2 | SO4 | BBB | 1003 | e6yr2BBB2 | HTH | HTH | Three-helical HTH | TetR_N |