Table 2.
Calculation of iron content of protein crystals used in this study
| Protein | Approximate crystal volume in X-ray beam | Space group | Unit cell volume (× 10−20) | Fe(III)/unit cell | Fe(III) concentration | Fe(III) amount |
|---|---|---|---|---|---|---|
| μm3 | cm3 | μmol/cm3 | fmol | |||
| KpDyP (6FKS) | 6200 | P 1 21 1 | 27.6 | 4 | 24.1 | 17.1 |
| NdCld (3NN1) | 1570–6200 | P 32 2 1 | 250 | 30 | 19.9 | 39.3–155.3 |
| CCld (5MAU) | 7850–15,700 | P 1 | 127.7 | 2 | 2.6 | 100.2–200.5 |
| hhMb (1WLA) | 314 | P 1 21 1 | 6.4 | 2 | 52.0 | 0.2 |
| AvTsdA (4WQ7) | 314–1570 | C 1 2 1 | 24.8 | 8 | 53.5 | 0.8–3.9 |
| LmChdC (6FXJ) | 1570–3100 | P 1 21 1 | 75.4 | 10 | 22.0 | 11.8–23.4 |