4KD4
Crystal structure of Staphylococcal nuclease variant V23L/L25V/V66I/I72V 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 41 |
| Unit cell lengths | 47.640, 47.640, 62.806 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 47.640 - 1.550 |
| R-factor | 0.1786 |
| Rwork | 0.177 |
| R-free | 0.21880 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1snc |
| RMSD bond length | 0.019 |
| RMSD bond angle | 1.996 |
| 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 | 1.580 |
| High resolution limit [Å] | 1.550 | 4.210 | 1.550 |
| Rmerge | 0.034 | 0.042 | 0.195 |
| Number of reflections | 20413 | ||
| <I/σ(I)> | 26.2 | 13.8 | |
| Completeness [%] | 99.9 | 99.8 | 99.6 |
| Redundancy | 12.6 | 12.4 | 10 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 8 | 277 | 30% MPD, 25 mM potassium phosphate, calcium chloride, pdTp, pH 8.0, vapor diffusion, hanging drop, temperature 277K |
