| F | Mtrc-MtrF_II-IV_dom | e4ec6F1 | A: alpha arrays | X: Alpha-beta plaits | H: Pseudouridine synthase | T: Pseudouridine synthase | F: Mtrc-MtrF_II-IV_dom | ECOD (v295.2) |
| E | Mtrc-MtrF_II-IV_dom | e4ec6E1 | A: alpha arrays | X: Alpha-beta plaits | H: Pseudouridine synthase | T: Pseudouridine synthase | F: Mtrc-MtrF_II-IV_dom | ECOD (v295.2) |
| D | Mtrc-MtrF_II-IV_dom | e4ec6D1 | A: alpha arrays | X: Alpha-beta plaits | H: Pseudouridine synthase | T: Pseudouridine synthase | F: Mtrc-MtrF_II-IV_dom | ECOD (v295.2) |
| C | Mtrc-MtrF_II-IV_dom | e4ec6C1 | A: alpha arrays | X: Alpha-beta plaits | H: Pseudouridine synthase | T: Pseudouridine synthase | F: Mtrc-MtrF_II-IV_dom | ECOD (v295.2) |
| B | Mtrc-MtrF_II-IV_dom | e4ec6B1 | A: alpha arrays | X: Alpha-beta plaits | H: Pseudouridine synthase | T: Pseudouridine synthase | F: Mtrc-MtrF_II-IV_dom | ECOD (v295.2) |
| A | NAPRTase | e4ec6A1 | A: alpha arrays | X: Glucocorticoid receptor-like | H: alpha-helical domain in beta-lactamase/transpeptidase-like proteins | T: alpha-helical domain in beta-lactamase/transpeptidase-like proteins | F: NAPRTase | ECOD (v295.2) |