| E6LHV2 | DB14546 | 6tug | SO4 | B | 504 | e6tugA1 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | Cas_Csm6_HEPN |
| E6LHV2 | DB14546 | 6tug | SO4 | B | 504 | e6tugB1 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | Cas_Csm6_HEPN |
| E6LHV2 | DB14546 | 6tug | SO4 | C | 504 | e6tugC1 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | Cas_Csm6_HEPN |
| E6LHV2 | DB14546 | 6tug | SO4 | C | 504 | e6tugD1 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | Cas_Csm6_HEPN |
| E6LHV2 | DB14546 | 6tug | SO4 | F | 504 | e6tugE1 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | Cas_Csm6_HEPN |
| E6LHV2 | DB14546 | 6tug | SO4 | F | 504 | e6tugF1 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | Cas_Csm6_HEPN |
| E6LHV2 | DB14546 | 6tug | SO4 | G | 504 | e6tugG1 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | Cas_Csm6_HEPN |
| E6LHV2 | DB14546 | 6tug | SO4 | G | 504 | e6tugH1 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | Cas_Csm6_HEPN |