| D | PksD | e4opeD2 | A: a+b two layers | X: KS-MAT linker domain in fatty acid synthase (From Topology) | H: KS-MAT linker domain in fatty acid synthase (From Topology) | T: KS-MAT linker domain in fatty acid synthase | F: PksD | ECOD (1.6) |
| D | ketoacyl-synt | e4opeD1 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: ketoacyl-synt | ECOD (1.6) |
| D | Ketoacyl-synt_C | e4opeD3 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: Ketoacyl-synt_C | ECOD (1.6) |
| C | PksD | e4opeC3 | A: a+b two layers | X: KS-MAT linker domain in fatty acid synthase (From Topology) | H: KS-MAT linker domain in fatty acid synthase (From Topology) | T: KS-MAT linker domain in fatty acid synthase | F: PksD | ECOD (1.6) |
| C | ketoacyl-synt | e4opeC1 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: ketoacyl-synt | ECOD (1.6) |
| C | Ketoacyl-synt_C | e4opeC2 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: Ketoacyl-synt_C | ECOD (1.6) |
| B | PksD | e4opeB2 | A: a+b two layers | X: KS-MAT linker domain in fatty acid synthase (From Topology) | H: KS-MAT linker domain in fatty acid synthase (From Topology) | T: KS-MAT linker domain in fatty acid synthase | F: PksD | ECOD (1.6) |
| B | ketoacyl-synt | e4opeB1 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: ketoacyl-synt | ECOD (1.6) |
| B | Ketoacyl-synt_C | e4opeB3 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: Ketoacyl-synt_C | ECOD (1.6) |
| A | PksD | e4opeA3 | A: a+b two layers | X: KS-MAT linker domain in fatty acid synthase (From Topology) | H: KS-MAT linker domain in fatty acid synthase (From Topology) | T: KS-MAT linker domain in fatty acid synthase | F: PksD | ECOD (1.6) |
| A | ketoacyl-synt | e4opeA1 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: ketoacyl-synt | ECOD (1.6) |
| A | Ketoacyl-synt_C | e4opeA2 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: Ketoacyl-synt_C | ECOD (1.6) |