X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Temperature 277.0
Details 6% PEG 6000, 0.1M Tris-HCl, 24mM beta-mercaptoethanol, 1M LiCl, 10% Glycerol, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 146.58 α = 90
b = 146.58 β = 90
c = 128.92 γ = 90
Symmetry
Space Group I 4

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 93
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 mirrors 2002-03-03
Diffraction Radiation
Monochromator Protocol
Silicon SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE A1 0.93 CHESS A1

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
2.65 41.24 89.0 0.038 0.038 -- 2.5 39557 34951 0.0 0.0 30.7
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)
2.65 2.72 89.0 0.371 0.371 2.0 2.5 2383

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 2.65 41.24 -- 1.1 39557 25599 2534 64.7 0.296 0.238 0.238 0.277 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 2.65 2.82 1861 198 1861 0.329 0.37 0.026 31.6
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 53.7
Anisotropic B[1][1] -8.8
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -8.8
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 17.6
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 15.86
c_scbond_it 10.87
c_mcangle_it 13.74
c_mcbond_it 8.8
c_improper_angle_d 0.87
c_dihedral_angle_d 22.9
c_angle_deg 1.5
c_bond_d 0.013
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.39
Luzzati Sigma A (Observed) 0.41
Luzzati Resolution Cutoff (Low) 41.24
Luzzati ESD (R-Free Set) 0.46
Luzzati Sigma A (R-Free Set) 0.48
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 6880
Nucleic Acid Atoms 0
Heterogen Atoms 141
Solvent Atoms 93

Software

Computing
Computing Package Purpose
HKL-2000 Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
MOLREP Structure Solution
CNS 1.1 Structure Refinement
Software
Software Name Purpose
CNS version: 1.1 refinement
MOLREP model building
SCALA data reduction
HKL-2000 data collection