| D | | e4r84D2 | A: alpha arrays | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: | ECOD (v295.2) |
| D | HetR_C | e4r84D3 | A: alpha arrays | X: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains | H: Dimerization domain of heterocyst differentiation protein HetR | T: Dimerization domain of heterocyst differentiation protein HetR | F: HetR_C | ECOD (v295.2) |
| C | | e4r84C2 | A: alpha arrays | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: | ECOD (v295.2) |
| C | HetR_C | e4r84C1 | A: alpha arrays | X: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains | H: Dimerization domain of heterocyst differentiation protein HetR | T: Dimerization domain of heterocyst differentiation protein HetR | F: HetR_C | ECOD (v295.2) |
| B | | e4r84B2 | A: alpha arrays | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: | ECOD (v295.2) |
| B | HetR_C | e4r84B3 | A: alpha arrays | X: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains | H: Dimerization domain of heterocyst differentiation protein HetR | T: Dimerization domain of heterocyst differentiation protein HetR | F: HetR_C | ECOD (v295.2) |
| A | | e4r84A1 | A: alpha arrays | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: | ECOD (v295.2) |
| A | HetR_C | e4r84A2 | A: alpha arrays | X: Membrane attack complex/perforin (MACPF) and cholesterol-dependent cytolysin (CDC) domains | H: Dimerization domain of heterocyst differentiation protein HetR | T: Dimerization domain of heterocyst differentiation protein HetR | F: HetR_C | ECOD (v295.2) |