4E1G
X-ray crystal structure of alpha-linolenic acid bound to the cyclooxygenase channel of cyclooxygenase-2
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | SYNCHROTRON |
Source details | CHESS BEAMLINE A1 |
Synchrotron site | CHESS |
Beamline | A1 |
Temperature [K] | 100 |
Detector technology | CCD |
Collection date | 2012-02-23 |
Detector | ADSC QUANTUM 210 |
Wavelength(s) | 0.9767 |
Spacegroup name | I 2 2 2 |
Unit cell lengths | 120.378, 132.131, 180.438 |
Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
Resolution | 20.000 - 2.100 |
R-factor | 0.161 |
Rwork | 0.159 |
R-free | 0.20300 |
Structure solution method | MOLECULAR REPLACEMENT |
Starting model (for MR) | 1cvu |
RMSD bond length | 0.024 |
RMSD bond angle | 2.044 |
Data reduction software | MOSFLM |
Data scaling software | SCALA |
Phasing software | PHASER |
Refinement software | REFMAC (5.5.0088) |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 20.000 | 2.210 |
High resolution limit [Å] | 2.100 | 2.100 |
Rmerge | 0.098 | 0.516 |
Number of reflections | 79080 | |
<I/σ(I)> | 10.9 | 2.7 |
Completeness [%] | 99.3 | 96.9 |
Redundancy | 4.7 | 4.1 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | VAPOR DIFFUSION, SITTING DROP | 7.5 | 296 | 23-34% Polyacrylic acid 5100, 100mM HEPES pH 7.5, 20mM MgCl2, VAPOR DIFFUSION, SITTING DROP, temperature 296K |