| A | OKR_DC_1_C | e4upfA3 | A: a+b two layers | X: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase (From Topology) | H: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase (From Topology) | T: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase | F: OKR_DC_1_C | ECOD (1.6) |
| A | OKR_DC_1_3rd | e4upfA2 | A: a+b two layers | X: C-terminal domain in some PLP-dependent transferases (From Topology) | H: C-terminal domain in some PLP-dependent transferases (From Topology) | T: C-terminal domain in some PLP-dependent transferases | F: OKR_DC_1_3rd | ECOD (1.6) |
| A | OKR_DC_1_N | e4upfA1 | A: a/b three-layered sandwiches | X: Flavodoxin-like | H: Class I glutamine amidotransferase-like | T: CheY-like | F: OKR_DC_1_N | ECOD (1.6) |
| A | OKR_DC_1_N2 | e4upfA4 | A: a/b three-layered sandwiches | X: PLP-dependent transferases (From Topology) | H: PLP-dependent transferases (From Topology) | T: PLP-dependent transferases | F: OKR_DC_1_N2 | ECOD (1.6) |