| A [auth D] | | e6n20D1 | A: alpha arrays | X: P-loop domains-like | H: beta-propeller | T: 7-bladed | F: | ECOD (v295) |
| B [auth A] | Sigma70_r2,Sigma70_ner | e6n20A1 | A: alpha arrays | X: P-loop domains-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: Sigma70_r2,Sigma70_ner | ECOD (v295) |
| C | Sigma70_r2,Sigma70_ner | e6n20C1 | A: alpha arrays | X: P-loop domains-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: Sigma70_r2,Sigma70_ner | ECOD (v295) |
| D [auth B] | Sigma70_r2,Sigma70_ner | e6n20B1 | A: alpha arrays | X: P-loop domains-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: Sigma70_r2,Sigma70_ner | ECOD (v295) |