| I | Thymidylat_synt | e4pzdI1 | 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 | e4pzdH1 | 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 | e4pzdG1 | 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 | e4pzdF1 | 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 | e4pzdE1 | 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 | e4pzdD1 | 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 | e4pzdC1 | 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 | e4pzdB1 | 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 | e4pzdA1 | 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) |