4M10
Crystal Structure of Murine Cyclooxygenase-2 Complex with Isoxicam
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | SYNCHROTRON |
Source details | APS BEAMLINE 24-ID-C |
Synchrotron site | APS |
Beamline | 24-ID-C |
Temperature [K] | 100 |
Detector technology | CCD |
Collection date | 2012-11-19 |
Detector | ADSC QUANTUM 270 |
Wavelength(s) | 0.9792 |
Spacegroup name | P 2 21 21 |
Unit cell lengths | 122.612, 134.077, 180.439 |
Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
Resolution | 49.273 - 2.010 |
R-factor | 0.1901 |
Rwork | 0.189 |
R-free | 0.22010 |
Structure solution method | MOLECULAR REPLACEMENT |
Starting model (for MR) | 3nt1 chain A |
RMSD bond length | 0.011 |
RMSD bond angle | 1.222 |
Data scaling software | XSCALE |
Phasing software | PHASES |
Refinement software | PHENIX ((phenix.refine: 1.8.2_1309)) |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 50.090 | 2.120 |
High resolution limit [Å] | 2.000 | 2.000 |
Rmerge | 0.754 | |
Number of reflections | 197072 | |
<I/σ(I)> | 25.96 | 2.4 |
Completeness [%] | 99.8 | 99.7 |
Redundancy | 6.7 | 6.4 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | VAPOR DIFFUSION, HANGING DROP | 8 | 291 | mCOX-2 protein reconstituted with a 2-fold molar excess of heme in phosphtate buffer, pH 6.7, 100 mM NaCl, 1.2% (w/v) -OG, and 0.1% NaN3, and 10-fold molar excess of inhibitors from 25 mM DMSO stocks were added to protein samples. Mixing 3 uL of the protein-inhibitor complex with 3 uL crystallization solution containing 50 mM EPPS, pH 8.0, 120 mM MgCl2, 22-26% PEG MME-550 against reservoir solutions comprised of 50 mM EPPS pH 8.0, 120 mM MgCl2, 22-26% PEG MME-550, VAPOR DIFFUSION, HANGING DROP, temperature 291K |