| D | ubiquitin | e6otnD1 | A: a/b three-layered sandwiches | X: Ten stranded beta/alpha barrel | H: Ten stranded beta/alpha barrel | T: Ten stranded beta/alpha barrel | F: ubiquitin | ECOD (v294.1) |
| C | Cas_Csm6_HEPN | e6otnC1 | A: a/b three-layered sandwiches | X: Ten stranded beta/alpha barrel | H: Ten stranded beta/alpha barrel | T: Ten stranded beta/alpha barrel | F: Cas_Csm6_HEPN | ECOD (v294.1) |
| B | ubiquitin | e6otnB1 | A: a/b three-layered sandwiches | X: Ten stranded beta/alpha barrel | H: Ten stranded beta/alpha barrel | T: Ten stranded beta/alpha barrel | F: ubiquitin | ECOD (v294.1) |
| A | ubiquitin | e6otnA1 | A: a/b three-layered sandwiches | X: Ten stranded beta/alpha barrel | H: Ten stranded beta/alpha barrel | T: Ten stranded beta/alpha barrel | F: ubiquitin | ECOD (v294.1) |