2HVK
crystal structure of the KcsA-Fab-TBA complex in high K+
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | NSLS BEAMLINE X29A |
| Synchrotron site | NSLS |
| Beamline | X29A |
| Temperature [K] | 100 |
| Detector technology | CCD |
| Collection date | 2006-05-07 |
| Detector | ADSC QUANTUM 315 |
| Wavelength(s) | 1.1 |
| Spacegroup name | I 4 |
| Unit cell lengths | 155.874, 155.874, 76.159 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 27.000 - 1.900 |
| R-factor | 0.228 |
| Rwork | 0.228 |
| R-free | 0.24500 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1k4c |
| RMSD bond length | 0.006 |
| RMSD bond angle | 1.300 |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | CNS |
| Refinement software | CNS (1.1) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 30.000 | 1.970 |
| High resolution limit [Å] | 1.900 | 1.900 |
| Rmerge | 0.058 | 0.413 |
| Number of reflections | 71466 | |
| <I/σ(I)> | 16.7 | |
| Completeness [%] | 99.2 | 92.8 |
| Redundancy | 6.5 | 4.1 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION | 6.5 | 293 | 18-25% PEG 400, 50mM Mg(Ac)2, 50mM NaAc (pH5) or Na Cacodylate (pH6) or Hepes (PH 7), pH 6.5, VAPOR DIFFUSION, temperature 293K |
