X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details 50MM TRIS-HCL, PH7.5, 200MM SODIUM CHLORIDE, 20MM MAGNESIUM SULPHATE, 1MM EDTA, 0.002% (W/V) PHENYL METHYLSULPHONYL FLUORIDE, 0.02%(W/V) SODIUM AZIDE, 10.5% (W/V) PEG MME 5000, 250UM AMP-PNP AND 5UM ADP.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 281 α = 90
b = 106.6 β = 90
c = 138.8 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1997-05-12
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX9.6 -- SRS PX9.6

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 20 97.2 0.088 -- -- 2.5 -- 70240 -- -- 54.48
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)
3.0 3.16 98.0 0.304 -- 3.4 2.5 --

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 3.0 6.0 -- 2.0 -- 66714 3434 90.01 -- 0.207 0.207 0.297 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 3.12 3.0 -- 316 6154 0.293 0.367 -- 89.23
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model INDIVIDUAL
Mean Isotropic B 52.67
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 2.5
x_scbond_it 2.0
x_mcangle_it 2.0
x_mcbond_it 1.5
x_improper_angle_d 0.95
x_bond_d 0.005
x_angle_deg 0.994
x_dihedral_angle_d 22.17
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 22732
Nucleic Acid Atoms 0
Heterogen Atoms 161
Solvent Atoms 164

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
CCP4 Structure Solution
X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement
CCP4 model building