Table 3.
Crystallographic Data Collection and Refinement Statistics for CA II-Inhibitor Complexes
| Inhibitor Complex | pAEBS | MH 1.25 | pCEBS | MH 1.29 |
|---|---|---|---|---|
| Space Group | P21 | P21 | P21 | P21 |
| Unit Cell constants, (σ) (Å) | a = 42.289(5)
b = 41.440(6) c = 72.357(9) β = 104.558(8)° |
a = 42.264(2)
b = 41.338(4) c = 71.975(5) β = 104.496(4)° |
a = 42.280(2)
b = 41.361(3) c = 72.135(4) β = 104.500(3)° |
a = 42.339(5)
b = 41.189(6) c = 72.077(8) β = 104.838(7)° |
| Wavelength (Å) | 1.0000 | 0.9184 | 0.9184 | 1.0000 |
| No. measured reflections | 245,255 | 315,311 | 409,170 | 216,120 |
| No. unique reflections | 74,655 | 105,952 | 120,621 | 90,979 |
| Max resolution (Å) | 1.20 | 1.03 | 1.01 | 1.10 |
| Rmerge (outer shell)a | 0.076 (0.270) | 0.061 (0.283) | 0.064 (0.345) | 0.072 (0.348) |
| Completeness of data (outer shell) (%) | 98.8 (95.3) | 89.7 (56.9) | 95.4 (71.1) | 92.7 (87.2) |
| No. reflections used in refinement | 73,136 | 103,824 | 118,194 | 89,164 |
| No. reflections in test set | 1502 | 2111 | 2407 | 1802 |
| Rworkb | 0.1316 | 0.1293 | 0.1214 | 0.1327 |
| Rfreeb | 0.1647 | 0.1636 | 0.1481 | 0.1637 |
| No. nonhydrogen atomsc | 2375 | 2514 | 2493 | 2429 |
| No. solvent moleculesc | 273 | 364 | 340 | 256 |
| r.m.s.d. from ideality | ||||
| bond lengths (Å) | 0.013 | 0.014 | 0.016 | 0.015 |
| bond angles (°) | 2.3 | 2.4 | 2.3 | 2.4 |
| Dihedral angles (°) | 26.4 | 26.2 | 26.0 | 26.5 |
| Improper dihedral angles (°) | 1.60 | 1.68 | 1.72 | 1.74 |
| PDB accession codes | 2NNG | 2NNS | 2NNO | 2NNV |
Rmerge for replicate reflections, R = Σ|Ih − <Ih>|/Σ<Ih>; Ih is the intensity measured for reflection h; <Ih> is the 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