X-RAY DIFFRACTION Experimental Data & Validation

X-ray Experimental Help


Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.6
Temperature 295.0
Details 14% PEG 8000, 0.1M sodium cacodylate, 0.25M magnesium chloride, pH 6.6 mixed 1:1 with protein in solution 10mM imidazole, 50mM potassium chloride, pH7.5, VAPOR DIFFUSION, HANGING DROP at 295K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 82.76 α = 90
b = 115.97 β = 90
c = 271.85 γ = 90
Space Group C 2 2 21


Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 mirrors 2000-11-22
Diffraction Radiation
Monochromator Protocol
bent conical Si-mirror (Rh coating) bend cylindrical Ge(111) monochromator SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

Data Collection

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
1.8 40 87.2 0.033 -- -- 3.8 105425 105425 0.0 0.0 25.0
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)
1.8 1.86 47.5 0.258 -- 3.72 1.8 5684


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 1.8 10.0 0.0 0.0 120144 102691 10314 85.5 0.186 0.183 0.1832 0.2119 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 1.8 1.86 5011 532 -- 0.252 0.277 -- 48.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model none
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.928
c_dihedral_angle_d 22.007
c_bond_d 0.006
c_angle_deg 1.276
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Luzzati Sigma A (Observed) 0.15
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.23
Luzzati Sigma A (R-Free Set) 0.18
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 8814
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 926


Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CNS Structure Solution
CNS Structure Refinement
Software Name Purpose
CNS refinement
CNS model building
SCALEPACK data reduction
DENZO data collection