X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.2
Details PROTEIN WAS CRYSTALLIZED IN SITTING DROPS FROM 7-9% PEG 8000 AND 0.3 M POTASSIUM PHOSPHATE BUFFER, PH 6.2

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 138.77 α = 90
b = 148.22 β = 90
c = 234.01 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 RIGAKU MIRRORS 1995-12
Diffraction Radiation
Monochromator Protocol
NI FILTER --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- -- -- --

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
2.4 100 87.2 0.053 0.053 -- 2.8 -- 172832 -- 0.0 27.0
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)
2.4 2.55 66.8 0.247 0.247 2.4 2.8 --

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 AND SIR 2.4 100.0 -- 1.0 -- 157428 7906 83.6 -- 0.184 0.184 0.224 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 2.4 2.55 -- 834 15638 0.279 0.303 0.01 53.1
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 24.4
RMS Deviations
Key Refinement Restraint Deviation
x_dihedral_angle_d 27.9
x_angle_deg 1.7
x_bond_d 0.011
x_mcangle_it 3.45
x_scangle_it 5.38
x_improper_angle_d 0.81
x_scbond_it 3.9
x_mcbond_it 2.38
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.25
Luzzati Sigma A (Observed) 0.29
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.3
Luzzati Sigma A (R-Free Set) 0.32
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 31164
Nucleic Acid Atoms 0
Heterogen Atoms 6
Solvent Atoms 2556

Software

Software
Software Name Purpose
DENZO data reduction
SCALEIT data reduction
X-PLOR model building version: 3.843
X-PLOR refinement version: 3.843
SCALEIT data scaling
X-PLOR phasing version: 3.843