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 |