3S79

Human placental aromatase cytochrome P450 (CYP19A1) refined at 2.75 angstrom


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3EQMPDB ENTRY 3EQM

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.427720-30% PEG 4000, phosphate buffer, pH 7.4, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 140.218α = 90
b = 140.218β = 90
c = 119.271γ = 120
Symmetry
Space GroupP 32 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 3152007-11-28MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 19-ID0.979APS19-ID

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
12.75121.4399.50.07725.426336183361883.2
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.752.85100

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 (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONRefinement at higher resolutionTHROUGHOUTPDB ENTRY 3EQM2.75121.273361833618176999.150.220470.220470.219650.2356RANDOM69.152
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]
2.241.122.24-3.36
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.828
r_dihedral_angle_3_deg20.189
r_dihedral_angle_4_deg16.205
r_dihedral_angle_1_deg6.177
r_scangle_it1.851
r_angle_refined_deg1.272
r_scbond_it1.04
r_mcangle_it0.88
r_mcbond_it0.455
r_chiral_restr0.101
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.828
r_dihedral_angle_3_deg20.189
r_dihedral_angle_4_deg16.205
r_dihedral_angle_1_deg6.177
r_scangle_it1.851
r_angle_refined_deg1.272
r_scbond_it1.04
r_mcangle_it0.88
r_mcbond_it0.455
r_chiral_restr0.101
r_bond_refined_d0.008
r_gen_planes_refined0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3658
Nucleic Acid Atoms
Solvent Atoms37
Heterogen Atoms79

Software

Software
Software NamePurpose
ADSCdata collection
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling