| A4IKE6 | n/a | 2ynq | CL | A | 1394 | e2ynqA1 | Repetitive alpha hairpins | EssB extracellular domain | EssB extracellular domain | YukC |
| A4IKE6 | n/a | 2ynq | CL | A | 1394 | e2ynqD1 | Repetitive alpha hairpins | EssB extracellular domain | EssB extracellular domain | YukC |
| A4IKE6 | n/a | 2ynq | CL | B | 1392 | e2ynqB1 | Repetitive alpha hairpins | EssB extracellular domain | EssB extracellular domain | YukC |
| A4IKE6 | n/a | 2ynq | CL | C | 1392 | e2ynqC1 | Repetitive alpha hairpins | EssB extracellular domain | EssB extracellular domain | YukC |
| A4IKE6 | n/a | 4ano | CL | A | 1211 | e4anoA1 | Protein kinase/SAICAR synthase/ATP-grasp | Protein kinase/SAICAR synthase/ATP-grasp | Protein kinase | YukC |