X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.6
Details HANGING DROP VAPOUR DIFFUSION PROTEIN SOLUTION: 10 MG/ML HEXB IN 10MM SODIUM CITRATE, 100 MM NACL, PH6.0 RESERVOIR SOLUTION: 100 MM SODIUM CITRATE, PH 5.6, 16% (V/V) ETHYLENE GLYCOL, 10%(V/V) POLYETHYLENE GLYCOL 8000

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 163.93 α = 90
b = 163.93 β = 90
c = 244.72 γ = 120
Symmetry
Space Group P 31 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH -- 2001-03-23
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-1 -- ESRF ID14-1

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
2.25 30 99.9 0.065 -- -- 10.7 -- 180325 -- -- 31.9
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)
2.25 2.33 100.0 0.356 -- 5.5 9.7 --

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
MIRAS 2.25 28.12 -- 0.0 -- 175064 1708 97.4 -- 0.196 0.196 0.236 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 2.25 2.33 -- 174 17305 0.268 0.307 0.023 98.2
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 41.6
Anisotropic B[1][1] 8.86
Anisotropic B[1][2] 6.16
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 8.56
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -17.42
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 3.04
c_angle_deg 1.5
c_scbond_it 2.14
c_mcangle_it 2.15
c_mcbond_it 1.37
c_dihedral_angle_d 23.6
c_improper_angle_d 0.97
c_bond_d 0.01
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.26
Luzzati Sigma A (Observed) 0.24
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.33
Luzzati Sigma A (R-Free Set) 0.28
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 23420
Nucleic Acid Atoms 0
Heterogen Atoms 402
Solvent Atoms 2326

Software

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