Table 2.
Crystallization conditions and electron density features of TPST2 structures.
| TPST2Na (PDB: 9WWE) | TPST2Mn (PDB: 9WWF) | TPST2pep (PDB: 3AP1) | TPST2apo (PDB: 3AP3) | Co (ano) | Zn (ano) | Cu (ano) | |
|---|---|---|---|---|---|---|---|
| Cation concentration (mM) | |||||||
| Na | 120 | 120 | 300 | 200 | 120 | 120 | 120 |
| K | 100 | 100 | - | - | 100 | 100 | 100 |
| Zn | 25 | 1 | - | - | 1 | 10 | 1 |
| Mn | - | 20 | 1 | 1 | - | - | - |
| Co | - | - | - | - | 10 | - | - |
| Cu | - | - | - | - | - | - | 10 |
| Peak height (2Fo–Fc / anomalous; σ) | |||||||
| Metal binding site 1 | 8.1 / NA | 5.8 / 8.5 | 2.6 / - | - / - | 5.1 / 5.2 | 4.3 / - | 3.7 / - |
| Metal binding site 2 | 10.1 / NA | 7.6 / 5.8 | 5.2 / - | - / - | 4.5 / 3.5 | 4.3 / - | 3.4 / - |
| Crystallographic lattice site 1 | 28.5 / NA | 23.3 / 10.7 | - / - | - / - | 16.8 / 5 | 13.3 / 46.0 | 14.6 / - |
| Crystallographic lattice site 2 | 20.3 / NA | - / - | - / - | - / - | - / - | 4.2 / 9.3 | - / - |
Values indicate crystallization cation concentrations and corresponding 2Fo-Fc / anomalous peak heights (σ) observed at metal-binding or lattice sites.