| G | HORMA | e2frpG3 | A: alpha arrays | X: Subtilisin-like | H: Subtilisin-like | T: Subtilisin-like | F: HORMA | ECOD (v295.2) |
| F | CopC | e2frpF1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: CopC | ECOD (v295.2) |
| E | Cpn60_TCP1 | e2frpE1 | A: alpha arrays | X: C-terminal subdomain in Lon-related proteases catalytic domains | H: C-terminal subdomain in Lon-related proteases catalytic domains | T: C-terminal subdomain in Lon-related proteases catalytic domains | F: Cpn60_TCP1 | ECOD (v295.2) |
| D | Cpn60_TCP1 | e2frpD1 | A: alpha arrays | X: C-terminal subdomain in Lon-related proteases catalytic domains | H: C-terminal subdomain in Lon-related proteases catalytic domains | T: C-terminal subdomain in Lon-related proteases catalytic domains | F: Cpn60_TCP1 | ECOD (v295.2) |
| C | Cpn60_TCP1 | e2frpC1 | A: alpha arrays | X: C-terminal subdomain in Lon-related proteases catalytic domains | H: C-terminal subdomain in Lon-related proteases catalytic domains | T: C-terminal subdomain in Lon-related proteases catalytic domains | F: Cpn60_TCP1 | ECOD (v295.2) |
| B | Cpn60_TCP1 | e2frpB1 | A: alpha arrays | X: C-terminal subdomain in Lon-related proteases catalytic domains | H: C-terminal subdomain in Lon-related proteases catalytic domains | T: C-terminal subdomain in Lon-related proteases catalytic domains | F: Cpn60_TCP1 | ECOD (v295.2) |
| A | Cpn60_TCP1 | e2frpA1 | A: alpha arrays | X: C-terminal subdomain in Lon-related proteases catalytic domains | H: C-terminal subdomain in Lon-related proteases catalytic domains | T: C-terminal subdomain in Lon-related proteases catalytic domains | F: Cpn60_TCP1 | ECOD (v295.2) |