| X [auth Y] | ACR_tran | e2iy4Y1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| W [auth X] | ACR_tran | e2iy4X1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| V | ACR_tran | e2iy4V1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| U | ACR_tran | e2iy4U1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| T | ACR_tran | e2iy4T1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| S | ACR_tran | e2iy4S1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| R | ACR_tran | e2iy4R1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| Q | ACR_tran | e2iy4Q1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| P | ACR_tran | e2iy4P1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| O | ACR_tran | e2iy4O1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| N | ACR_tran | e2iy4N1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| M | ACR_tran | e2iy4M1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| L | ACR_tran | e2iy4L1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| K | ACR_tran | e2iy4K1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| J | ACR_tran | e2iy4J1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| I | ACR_tran | e2iy4I1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| H | ACR_tran | e2iy4H1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| G | ACR_tran | e2iy4G1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| F | ACR_tran | e2iy4F1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| E | ACR_tran | e2iy4E1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| D | ACR_tran | e2iy4D1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| C | ACR_tran | e2iy4C1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| B | ACR_tran | e2iy4B1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |
| A | ACR_tran | e2iy4A1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: ACR_tran | ECOD (v295.2) |