3C1G
Substrate binding, deprotonation and selectivity at the periplasmic entrance of the E. coli ammonia channel AmtB
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | SLS BEAMLINE X06SA |
| Synchrotron site | SLS |
| Beamline | X06SA |
| Temperature [K] | 100 |
| Detector technology | CCD |
| Collection date | 2007-05-14 |
| Detector | MARMOSAIC 225 mm CCD |
| Wavelength(s) | 0.9772 |
| Spacegroup name | P 63 |
| Unit cell lengths | 109.329, 109.329, 84.821 |
| Unit cell angles | 90.00, 90.00, 120.00 |
Refinement procedure
| Resolution | 15.000 - 2.300 |
| R-factor | 0.18788 |
| Rwork | 0.185 |
| R-free | 0.24203 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1xqf |
| RMSD bond length | 0.011 |
| RMSD bond angle | 1.190 |
| Data reduction software | XDS |
| Data scaling software | XSCALE |
| Phasing software | MOLREP |
| Refinement software | REFMAC (5.2.0019) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 20.000 | 2.400 |
| High resolution limit [Å] | 2.300 | 2.300 |
| Number of reflections | 25706 | |
| <I/σ(I)> | 17.2 | 2.48 |
| Completeness [%] | 98.7 | 97.6 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 4.6 | 298 | 26% PEG 550, 0.1M sodium acetate, 0.2M ammonium sulfate, pH 4.6, VAPOR DIFFUSION, SITTING DROP, temperature 298K |
