| R | HTH_3 | e3r1fR1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| Q | HTH_3 | e3r1fQ1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| P | HTH_3 | e3r1fP2 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| O | HTH_3 | e3r1fO2 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| N | HTH_3 | e3r1fN1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| M | HTH_3 | e3r1fM1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| L | HTH_3 | e3r1fL1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| K | HTH_3 | e3r1fK1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| J | HTH_3 | e3r1fJ1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| I | HTH_3 | e3r1fI1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| H | HTH_3 | e3r1fH1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| G | HTH_3 | e3r1fG1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| F | HTH_3 | e3r1fF1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| E | HTH_3 | e3r1fE1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| D | HTH_3 | e3r1fD1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| C | HTH_3 | e3r1fC1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| B | HTH_3 | e3r1fB1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
| A | HTH_3 | e3r1fA1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |