X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7
Temperature 298.0
Details protein solution: 15-20mg/ml PGI, 10mM imidazole (pH 7.5), 50mM KCl, 3mMNaN3, 5mM 5PAH reservoir solution: 10-15% PEG 8000, 250mM magnesium acetate, 100mM sodium cacodylate (pH6.5). VAPOR DIFFUSION, HANGING DROP at 298K, pH 7.0, temperature 298.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 82.83 α = 90
b = 116.55 β = 90
c = 271.82 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 93
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 1999-11-22
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 14-BM-C 1.000 APS 14-BM-C

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot
1.9 8 94.3 0.035 0.035 -- 5.1 95997 95997 0.0 0.0 22.646
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
1.9 1.97 99.8 0.082 0.082 15.45 4.88 10080

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
MOLECULAR REPLACEMENT 1.9 8.0 0.0 0.0 95997 95997 9635 93.6 -- -- 0.211 0.236 random
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 1.9 1.97 8963 969 -- 0.226 0.274 -- 98.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model anisotropic
Mean Isotropic B 25.96
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.009
c_dihedral_angle_d 22.76
c_angle_deg 1.4
c_improper_angle_d 0.92
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.22
Luzzati Sigma A (Observed) 0.06
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.25
Luzzati Sigma A (R-Free Set) 0.13
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 8790
Nucleic Acid Atoms 0
Heterogen Atoms 30
Solvent Atoms 892

Software

Software
Software Name Purpose
CNS refinement
DENZO data reduction
SCALEPACK data scaling
CNS phasing