1KE0
X-ray crystal structure of AmpC beta-lactamase from E. coli in complex with the inhibitor 4-(carboxyvin-2-yl)phenylboronic acid
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | ROTATING ANODE |
Source details | RIGAKU RU200 |
Temperature [K] | 103 |
Detector technology | IMAGE PLATE |
Collection date | 1999-04-20 |
Detector | RIGAKU RAXIS IIC |
Wavelength(s) | 1.5418 |
Spacegroup name | C 1 2 1 |
Unit cell lengths | 118.620, 77.430, 97.370 |
Unit cell angles | 90.00, 115.32, 90.00 |
Refinement procedure
Resolution | 20.000 - 2.300 |
Rwork | 0.199 |
R-free | 0.24500 |
Structure solution method | MOLECULAR REPLACEMENT |
Starting model (for MR) | 1c3b |
RMSD bond length | 0.010 |
RMSD bond angle | 1.600 |
Data reduction software | DENZO |
Data scaling software | SCALEPACK |
Phasing software | X-PLOR |
Refinement software | CNS (1.0) |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 20.000 | 2.350 |
High resolution limit [Å] | 2.300 | 2.300 |
Rmerge | 0.075 | 0.238 |
Total number of observations | 63591 * | |
Number of reflections | 33436 | |
<I/σ(I)> | 12.2 | 3.9 |
Completeness [%] | 94.2 | 96.6 |
Redundancy | 1.9 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | VAPOR DIFFUSION, HANGING DROP | 8.7 | 23 * | used microseeding * |
Crystallization Reagents in Literatures
ID | crystal ID | solution | reagent name | concentration (unit) | details |
1 | 1 | reservoir | potassium phosphate | 1.7 (M) | pH8.7 |
2 | 1 | drop | protein | 0.095 (mM) | |
3 | 1 | drop | DMSO | 2 (%) | |
4 | 1 | drop | potassium phosphate | 1.7 (M) | pH8.7 |