| C | TrbI | e6on3C1 | 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: TrbI | ECOD (v294.1) |
| D | FIVAR | e6on3D2 | 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: FIVAR | ECOD (v294.1) |
| E | TrbI | e6on3E1 | 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: TrbI | ECOD (v294.1) |
| F | TrbI | e6on3F1 | 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: TrbI | ECOD (v294.1) |
| B | TrbI | e6on3B1 | 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: TrbI | ECOD (v294.1) |
| A | TrbI | e6on3A1 | 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: TrbI | ECOD (v294.1) |