2H8P
Structure of a K channel with an amide to ester substitution in the selectivity filter
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | NSLS BEAMLINE X25 |
| Synchrotron site | NSLS |
| Beamline | X25 |
| Detector technology | CCD |
| Detector | ADSC QUANTUM 315 |
| Spacegroup name | I 4 |
| Unit cell lengths | 155.884, 155.884, 75.524 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 49.300 - 2.250 |
| R-factor | 0.233 |
| Rwork | 0.233 |
| R-free | 0.24200 |
| Structure solution method | MOLECULAR REPLACEMENT |
| RMSD bond length | 0.013 |
| RMSD bond angle | 1.600 |
| Phasing software | MOLREP |
| Refinement software | CNS (1.1) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 60.000 | 2.390 |
| High resolution limit [Å] | 2.250 | 2.250 |
| Number of reflections | 42808 | |
| <I/σ(I)> | 17.5 | 2.2 |
| Completeness [%] | 98.1 | 96.3 |
| Redundancy | 3.8 | 3.2 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | 6.5 | 293 | 20-25% PEG 400, 50 mM Magnesium Acetate, 0.3 M KCl, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K, pH 6.50 |
