Table I.
Summary of data collection and crystallographic refinements
| FcγRIIa-LR | FcγRIIa-HR | FcγRIIa-HR–Fc | |
|---|---|---|---|
| Data collection | |||
| Space group | P21212 | C2221 | C2221 |
| Cell dimensions | |||
| a, b, c (Å) | 79.34, 100.41, 27.94 | 50.04, 77.94, 88.10 | 153.38, 255.55, 58.44 |
| Resolution (Å) | 20–1.5 (1.55–1.5)a | 30–2.3 (2.38–2.3) | 30–3.8 (3.94–3.8) |
| Rsym | 0.052 (0.32) | 0.10 (0.27) | 0.14 (0.35) |
| Mean I/σ(I)a | 21.8 (3.8) | 13.2 (4.9) | 10.8 (3.78) |
| Completeness (%) | 94.5 (85.5) | 97.2 (96.0) | 98.9 (99.7) |
| Redundancy | 6.1 (4.0) | 4.6 (4.3) | 5.0 (4.8) |
| Refinement | |||
| Resolution (Å) | 19.8–1.5 | 20.4–2.3 | 29.7–3.8 |
| No. of reflections | 34,590 | 7,554 | 11,110 |
| Rwork/Rfree | 0.20/0.23 | 0.21/0.28 | 0.25/0.42 |
| No. of atoms | |||
| Protein | 1,354 | 1,350 | 4,745 |
| Ligand | 14 | 0 | 376 |
| Water | 273 | 85 | 24 |
| B-factors | |||
| Protein | 22.7 | 20.7 | 34.5 |
| Water | 36.5 | 23.1 | 26.6 |
| RMSD bond lengths (Å) | 0.005 | 0.006 | 0.010 |
| RMSD bond angles (°) | 1.3 | 1.4 | 1.8 |
a
Values in parentheses are for the highest resolution shell.
RMSD, root-mean-square deviation.