| P30870 | DB14546 | 3k7d | SO4 | A | 16 | e3k7dA3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | GlnE |
| P30870 | DB14546 | 3k7d | SO4 | A | 16 | e3k7dA4 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | GlnD_UR_UTase |
| P30870 | DB14546 | 3k7d | SO4 | A | 16 | e3k7dB4 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | GlnD_UR_UTase |
| P30870 | DB14546 | 3k7d | SO4 | B | 15 | e3k7dA4 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | GlnD_UR_UTase |
| P30870 | DB14546 | 3k7d | SO4 | B | 15 | e3k7dB3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | GlnE |
| P30870 | DB14546 | 3k7d | SO4 | B | 15 | e3k7dB4 | Four-helical up-and-down bundle | HEPN | Nucleotidyltransferase substrate binding subunit/domain | GlnD_UR_UTase |