| X | | e4toeX1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| W | | e4toeW1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| V | | e4toeV1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| U | | e4toeU1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| T | | e4toeT1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| S | | e4toeS1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| R | | e4toeR1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| Q | | e4toeQ1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| P | | e4toeP1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| O | | e4toeO1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| N | | e4toeN1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| M | | e4toeM1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| L | | e4toeL1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| K | | e4toeK1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| J | | e4toeJ1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| I | | e4toeI1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| H | | e4toeH1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| G | | e4toeG1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| F | | e4toeF1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| E | | e4toeE1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| D | | e4toeD1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| C | | e4toeC1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| B | | e4toeB1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |
| A | | e4toeA1 | A: Four-helical up-and-down bundle | X: Thymidylate synthase/dCMP hydroxymethylase | H: Thymidylate synthase/dCMP hydroxymethylase | T: Thymidylat_synt | F: | ECOD (20:10:01) |