X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.5
Temperature 296.0
Details magnesium sulfate heptahydrate, MES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 296K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 142.99 α = 90
b = 142.99 β = 90
c = 67.65 γ = 120
Symmetry
Space Group P 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 2002-05-04
Diffraction Radiation
Monochromator Protocol
single crystal Si(311) bent monochromator SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL9-1 0.95 SSRL BL9-1

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
3.1 30 95.8 0.089 -- -- 7.7 27807 27262 -- -3.0 73.2
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)
3.1 3.21 71.6 0.31 -- 2.4 1.9 1998

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 3.1 29.69 -- 0.0 27807 26684 1300 95.2 0.252 0.252 0.252 0.284 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 3.1 3.21 -- 109 1760 0.401 0.425 0.041 67.2
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model GROUP
Mean Isotropic B 98.2
Anisotropic B[1][1] 17.85
Anisotropic B[1][2] 17.44
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 17.85
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -35.71
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.5
c_bond_d 0.009
c_dihedral_angle_d 26.5
c_improper_angle_d 1.29
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.46
Luzzati Sigma A (Observed) 0.79
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.52
Luzzati Sigma A (R-Free Set) 0.77
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5698
Nucleic Acid Atoms 0
Heterogen Atoms 582
Solvent Atoms 0

Software

Software
Software Name Purpose
CNS refinement version: 1.1
DENZO data reduction
SCALEPACK data scaling
AMoRE phasing