X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
Temperature 18.0
Details 0.04M Tris/HCl buffer, PEG 4000, 11-16%, 0.08M MgCl2, VAPOR DIFFUSION, HANGING DROP, temperature 18K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 94.11 α = 90
b = 94.11 β = 90
c = 94.11 γ = 90
Symmetry
Space Group P 21 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 4
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1996-11-06
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X31 -- EMBL/DESY, Hamburg X31

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 22.2 -- -- -- -- -- 12786 12786 2893460.0 -- 12.5

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
-- 2.2 22.18 -- 0.0 -- 12786 1320 89.0 -- 0.175 0.175 0.244 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 2.34 -- 219 1850 0.214 0.306 0.021 87.4
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 24.2
Anisotropic B[1][1] 0.0
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.0
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.0
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.011
c_mcangle_it 2.09
c_scbond_it 3.27
c_dihedral_angle_d 24.5
c_mcbond_it 1.32
c_improper_angle_d 1.04
c_angle_deg 1.7
c_scangle_it 4.39
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.22
Luzzati Sigma A (Observed) 0.21
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.31
Luzzati Sigma A (R-Free Set) 0.29
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2167
Nucleic Acid Atoms 0
Heterogen Atoms 26
Solvent Atoms 113

Software

Software
Software Name Purpose
CNS refinement
MAR345 data collection
SCALEPACK data scaling
CNS phasing