X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details 25% ETHYLENE GLYCOL, 100MM HEPES PH7.5, 10-15 MG/ML PROTEIN, pH 7.50

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 94.36 α = 90
b = 94.36 β = 90
c = 156.05 γ = 90
Symmetry
Space Group P 42 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH -- 1999-10-15
Diffraction Radiation
Monochromator Protocol
-- MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX9.6 0.87, 1.3 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
2.7 37 99.7 0.046 0.046 -- 5.5 -- 19994 -- 0.0 55.3
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)
2.7 2.85 99.9 0.246 0.246 3.0 5.5 --

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
MAD 2.7 37.12 -- 0.0 -- 19994 1019 99.7 -- 0.254 0.254 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 2.7 2.87 -- 160 3077 0.427 0.45 0.036 99.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 73.5
Anisotropic B[1][1] -5.35
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -5.35
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 10.71
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 22.2
c_bond_d 0.007
c_improper_angle_d 0.88
c_angle_deg 1.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.45
Luzzati Sigma A (Observed) 0.48
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.55
Luzzati Sigma A (R-Free Set) 0.63
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2889
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 36

Software

Software
Software Name Purpose
MOSFLM data reduction
SCALA data scaling
SOLVE phasing
SHARP phasing
CNS refinement version: 1.0