4KD3
Crystal structure of Staphylococcal nuclease variant Delta+PHS L25A/V66A/I92A at cryogenic temperature
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | NSLS BEAMLINE X25 |
| Synchrotron site | NSLS |
| Beamline | X25 |
| Temperature [K] | 100 |
| Detector technology | PIXEL |
| Collection date | 2011-09-25 |
| Detector | DECTRIS PILATUS 6M |
| Wavelength(s) | 0.9790 |
| Spacegroup name | P 1 21 1 |
| Unit cell lengths | 31.078, 60.042, 38.478 |
| Unit cell angles | 90.00, 94.88, 90.00 |
Refinement procedure
| Resolution | 38.340 - 1.750 |
| R-factor | 0.1826 |
| Rwork | 0.181 |
| R-free | 0.21910 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 3bdc |
| RMSD bond length | 0.019 |
| RMSD bond angle | 1.949 |
| Data reduction software | HKL-2000 |
| Data scaling software | SCALEPACK |
| Phasing software | PHASER (2.3.0) |
| Refinement software | REFMAC |
Data quality characteristics
| Overall | Inner shell | Outer shell | |
| Low resolution limit [Å] | 50.000 | 50.000 | 1.780 |
| High resolution limit [Å] | 1.750 | 4.750 | 1.750 |
| Rmerge | 0.043 | 0.041 | 0.114 |
| Number of reflections | 14281 | ||
| <I/σ(I)> | 21 | 17.7 | |
| Completeness [%] | 99.6 | 99.1 | 100 |
| Redundancy | 6.3 | 6 | 6.5 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6 | 277 | 20% MPD, 25 mM potassium phosphate, calcium chloride, pdTp, pH 6.0, vapor diffusion, hanging drop, temperature 277K, VAPOR DIFFUSION, HANGING DROP |
