X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6
Temperature 298.0
Details Ammonium Sulfate, pH 6, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 126.6 α = 90
b = 126.6 β = 90
c = 98.7 γ = 90
Symmetry
Space Group I 4 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2001-06-04
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL MAD
DOUBLE CRYSTAL MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL9-2 0.9198, 0.8611, 0.9196 SSRL BL9-2
SYNCHROTRON SSRL BEAMLINE BL9-2 1.071, 0.9794, 0.9252 SSRL BL9-2

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
2.85 30 99.6 0.065 -- -- -- 9667 9635 2.0 2.0 71.1
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)
2.85 2.95 100.0 0.343 -- 3.5 -- 947

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, MIR 2.85 30.0 0.0 0.0 9596 9590 503 99.2 -- -- 0.279 0.329 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 2.85 3.03 -- 90 1475 0.43 0.467 0.043 98.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 70.4
Anisotropic B[1][1] 5.31
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 5.31
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -10.62
RMS Deviations
Key Refinement Restraint Deviation
c_mcangle_it 2.75
c_dihedral_angle_d 24.1
c_improper_angle_d 0.92
c_scbond_it 2.13
c_bond_d 0.011
c_angle_deg 1.6
c_scangle_it 3.35
c_mcbond_it 1.54
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.48
Luzzati Sigma A (Observed) 0.57
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.49
Luzzati Sigma A (R-Free Set) 0.66
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2096
Nucleic Acid Atoms 0
Heterogen Atoms 88
Solvent Atoms 0

Software

Software
Software Name Purpose
SHARP phasing
CNS refinement version: 1.0
DENZO data reduction
SCALEPACK data scaling