| X | Thymidylat_synt | e4tobX1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| W | Thymidylat_synt | e4tobW1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| V | Thymidylat_synt | e4tobV1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| U | Thymidylat_synt | e4tobU1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| T | Thymidylat_synt | e4tobT1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| S | Thymidylat_synt | e4tobS1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| R | Thymidylat_synt | e4tobR1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| Q | Thymidylat_synt | e4tobQ1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| P | Thymidylat_synt | e4tobP1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| O | Thymidylat_synt | e4tobO1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| N | Thymidylat_synt | e4tobN1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| M | Thymidylat_synt | e4tobM1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| L | Thymidylat_synt | e4tobL1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| K | Thymidylat_synt | e4tobK1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| J | Thymidylat_synt | e4tobJ1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| I | Thymidylat_synt | e4tobI1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| H | Thymidylat_synt | e4tobH1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| G | Thymidylat_synt | e4tobG1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| F | Thymidylat_synt | e4tobF1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| E | Thymidylat_synt | e4tobE1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| D | Thymidylat_synt | e4tobD1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| C | Thymidylat_synt | e4tobC1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| B | Thymidylat_synt | e4tobB1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |
| A | Thymidylat_synt | e4tobA1 | A: alpha bundles | X: Four-helical up-and-down bundle | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylate synthase/dCMP hydroxymethylase | F: Thymidylat_synt | ECOD (develop294) |