X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.4
Temperature 291.0
Details 2.0 M Ammonium Sulfate, pH 6.4, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 78.37 α = 90
b = 135.89 β = 90
c = 137.56 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 298
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IV -- 1998-02-07
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU -- -- --

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
1.9 25 82.9 0.078 -- -- 4.0 58586 48568 2.0 2.0 11.7
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)
1.9 1.96 79.1 0.396 -- -- 4.0 --

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
-- 2.0 25.92 2.0 2.0 48568 37236 3793 74.3 0.23 0.214 0.214 0.238 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 2.0 2.13 -- 595 4947 0.234 0.248 0.01 66.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 20.1
Anisotropic B[1][1] 0.53
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 2.61
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -3.14
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 1.97
c_scbond_it 1.32
c_mcangle_it 1.28
c_mcbond_it 0.93
c_improper_angle_d 0.7
c_dihedral_angle_d 23.6
c_angle_deg 1.4
c_bond_d 0.48
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.25
Luzzati Sigma A (Observed) 0.17
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.28
Luzzati Sigma A (R-Free Set) 0.18
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4970
Nucleic Acid Atoms 0
Heterogen Atoms 18
Solvent Atoms 0

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CNS Structure Solution
CNS 0.9 Structure Refinement
Software
Software Name Purpose
CNS version: 0.9 refinement
CNS model building