X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.2
Details CRYSTALLIZATION CONDITIONS: VAPOUR DIFFUSION USING THE HANGING DROP TECHNIQUE, PRECIPITANT CONDITIONS: 10-12% PEG 8000 100MM SODIUM CACODYLATE PH 5.2, 75MM MNSO4 PROTEIN CONCENTRATION 8.5MG/ML

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 51.59 α = 90
b = 74.05 β = 105.11
c = 63.8 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 115
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS II -- 1997-12
Diffraction Radiation
Monochromator Protocol
GRAPHITE CRYSTAL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU300 -- -- --

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
2.2 23.6 95.0 0.07 -- -- 1.9 -- 22463 -- -- 14.5
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)
2.2 2.28 89.2 0.188 -- 3.5 2.0 --

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
OTHER 2.2 6.0 -- 0.0 -- 21309 2114 95.0 -- -- 0.147 0.235 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 2.2 2.29 -- 258 2217 0.205 0.262 0.016 89.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 23.2
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.25
x_dihedral_angle_d 25.0
x_mcbond_it 2.05
x_mcangle_it 2.99
x_scbond_it 3.69
x_scangle_it 5.35
x_bond_d 0.006
x_angle_deg 1.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.18
Luzzati Sigma A (Observed) 0.2
Luzzati Resolution Cutoff (Low) 4.0
Luzzati ESD (R-Free Set) 0.26
Luzzati Sigma A (R-Free Set) 0.21
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3837
Nucleic Acid Atoms 0
Heterogen Atoms 53
Solvent Atoms 507

Software

Software
Software Name Purpose
CCP4 model building
X-PLOR refinement version: 3.843
HKL data reduction
SCALEPACK data scaling
CCP4 phasing