3NXO
Perferential Selection of Isomer Binding from Chiral Mixtures: Alternate Binding Modes Observed for the E- and Z-isomers of a Series of 5-Substituted 2,4-Diaminofuro[2,3-d]pyrimidines as Ternary Complexes with NADPH and Human Dihydrofolate Reductase
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | SSRL BEAMLINE BL9-2 |
| Synchrotron site | SSRL |
| Beamline | BL9-2 |
| Temperature [K] | 200 |
| Detector technology | CCD |
| Collection date | 2008-12-06 |
| Detector | MARMOSAIC 325 mm CCD |
| Wavelength(s) | 0.975 |
| Spacegroup name | H 3 |
| Unit cell lengths | 84.150, 84.150, 77.968 |
| Unit cell angles | 90.00, 90.00, 120.00 |
Refinement procedure
| Resolution | 26.620 - 1.350 |
| R-factor | 0.19223 |
| Rwork | 0.191 |
| R-free | 0.20892 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1u70.pdb |
| RMSD bond length | 0.034 |
| RMSD bond angle | 2.788 |
| Data reduction software | MOSFLM |
| Data scaling software | SCALA |
| Phasing software | MOLREP |
| Refinement software | REFMAC (5.5.0088) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 26.600 | 1.420 |
| High resolution limit [Å] | 1.350 | 1.350 |
| Rmerge | 0.068 | 0.500 |
| Number of reflections | 45197 | |
| <I/σ(I)> | 18.9 | 4.4 |
| Completeness [%] | 99.9 | 99.9 |
| Redundancy | 8.7 | 8.2 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6.9 | 298 | K2PO4 with 30% saturated ammonium sulfate with 3% v/v ethanol, pH 6.9, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
