4E1G

X-ray crystal structure of alpha-linolenic acid bound to the cyclooxygenase channel of cyclooxygenase-2


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1CVUPDB ENTRY 1CVU

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.529623-34% Polyacrylic acid 5100, 100mM HEPES pH 7.5, 20mM MgCl2, VAPOR DIFFUSION, SITTING DROP, temperature 296K
Crystal Properties
Matthews coefficientSolvent content
2.5752.08

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 120.378α = 90
b = 132.131β = 90
c = 180.438γ = 90
Symmetry
Space GroupI 2 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 2102012-02-23MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONCHESS BEAMLINE A10.9767CHESSA1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.12099.350.09810.94.7832357908026.6
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.12.2196.90.5162.74.1

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1CVU2.1208323579080415499.30.1610.1590.203RANDOM29.14
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
0.410.15-0.56
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg37.343
r_dihedral_angle_3_deg14.697
r_dihedral_angle_4_deg14.417
r_dihedral_angle_1_deg6.327
r_scangle_it4.852
r_scbond_it3.243
r_angle_refined_deg2.044
r_mcangle_it1.757
r_mcbond_it1.037
r_chiral_restr0.148
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg37.343
r_dihedral_angle_3_deg14.697
r_dihedral_angle_4_deg14.417
r_dihedral_angle_1_deg6.327
r_scangle_it4.852
r_scbond_it3.243
r_angle_refined_deg2.044
r_mcangle_it1.757
r_mcbond_it1.037
r_chiral_restr0.148
r_bond_refined_d0.024
r_gen_planes_refined0.012
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms8840
Nucleic Acid Atoms
Solvent Atoms746
Heterogen Atoms335

Software

Software
Software NamePurpose
Adxvdata processing
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling