Table 4.
Crystallographic Data Collection and Refinement Statistics for CA I-Inhibitor Complexes
| Inhibitor Complex | MH 1.25 | pCEBS | MH 1.29 |
|---|---|---|---|
| Space Group | P212121 | P212121 | P212121 |
| Unit Cell constants (Å) | a = 62.4(1)
b = 72.3(1) c = 122.3(2) |
a = 62.422(8)
b = 71.82(1) c = 121.96(1) |
a = 62.28(1)
b = 71.82(1) c = 121.73(1) |
| Wavelength (Å) | 1.1271 | 1.1271 | 1.0000 |
| No. measured reflections | 560,061 | 392,855 | 181,031 |
| No. unique reflections | 80,458 | 65,427 | 46,613 |
| Max resolution (Å) | 1.55 | 1.65 | 1.85 |
| Rmerge (outer shell)a | 0.097 (0.549) | 0.099 (0.451) | 0.113 (0.391) |
| Completeness of data (outer shell) (%) | 99.9 (99.8) | 97.5 (98.2) | 98.6 (96.3) |
| No. reflections used in refinement | 78,912 | 61,854 | 41,995 |
| No. reflections in test set | 1581 | 2516 | 1759 |
| Rworkb | 0.2157 | 0.1996 | 0.1947 |
| Rfreeb | 0.2477 | 0.2222 | 0.2251 |
| No. nonhydrogen atomsc | 4601 | 4605 | 4526 |
| No. solvent moleculesc | 519 | 525 | 447 |
| r.m.s.d. from ideality | |||
| bond lengths (Å) | 0.005 | 0.006 | 0.006 |
| bond angles (°) | 1.3 | 1.4 | 1.3 |
| Dihedral angles (°) | 24.3 | 24.2 | 24.3 |
| Improper dihedral angles (°) | 0.77 | 0.83 | 0.81 |
| PDB accession codes | 2NMX | 2NN1 | 2NN7 |
Rmerge for replicate reflections, R = Σ|Ih − <Ih>|/Σ<Ih>; Ih is intensity measured for reflection h; <Ih> is average intensity for reflection h calculated from replicate data.
Crystallographic R factor, Rwork = Σ||Fo| − |Fc||/Σ|Fo| for reflections contained in the working set. Free R factor, Rfree = Σ||Fo| − |Fc||/Σ|Fo| for reflections contained in the test set held aside during refinement. |Fo| and |Fc| are the observed and calculated structure factor amplitudes, respectively.
per asymmetric unit