X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8.7
Temperature 293.0
Details 0.1 M Tris-HCl, 25% PEG 4000, 5-10 mM barium chloride dihydrate, pH 8.7, mixed with 10 mg/ml protein-nucleic acid mixture in 50 mM Tris-HCl, pH 8.0, 150 mM NaCl, 20 micromolar EDTA

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 62.43 α = 90
b = 62.43 β = 90
c = 83.31 γ = 120
Symmetry
Space Group P 31

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 210 -- 2010-02-24
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE A1 0.9769 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
2.1 30 99.3 0.099 -- 14.1 5.7 -- 21264 -- -3.0 --
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)
2.1 2.15 100.0 0.418 -- -- 5.7 --

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 2.1 30.0 -- 0.0 -- 20072 952 94.5 -- -- 0.22 0.237 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 2.1 2.23 -- 177 3302 0.288 0.349 0.026 97.6
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 43.9
Anisotropic B[1][1] -0.01
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -0.01
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.02
RMS Deviations
Key Refinement Restraint Deviation
cns_angle_deg 1.4
cns_bond_d 0.009
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.28
Luzzati Sigma A (Observed) 0.24
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.33
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3013
Nucleic Acid Atoms 79
Heterogen Atoms 1
Solvent Atoms 98

Software

Software
Software Name Purpose
CNS refinement
HKL-2000 data reduction
HKL-2000 data scaling
PHASER phasing