Table 2. Comparison of representative EcDSCD crystal structures.
Comparison of crystal forms, crystallization conditions, sulfate-compatible density and structural features of EcDSCD crystal structures. Δα1-helix angles were calculated relative to the present structure after monomer superposition.
| PDB code | Space group | Sulfate-compatible density | Crystallization condition | Resolution (Å) | Assembly-related note | Δ α1-helix angle (°) |
|---|---|---|---|---|---|---|
| 1e2o | F432 | Yes | Ammonium sulfate-containing | 3.0 | N-terminally His-tagged EcDSCD | 1.86 |
| 1scz | F432 | No | PEG/ammonium acetate/magnesium acetate | 2.2 | Sulfate-free F432 form | 3.58 |
| 1c4t | P3121 | Yes | Ammonium sulfate-containing | 3.0 | C-terminally His-tagged; altered packing | 1.40 |
| 6pbr | I4 | No | High-salt NaCl condition | 3.0 | Tag-free contaminant structure | 4.69 |
| This work | F432 | Yes | Ammonium sulfate-containing | 3.6 | Fortuitous EcDSCD crystal | — |