X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Temperature 294.0
Details 30% PEG 4000, 0.1 M Tris, 0.2 M Na acetate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 38.3 α = 90
b = 87.1 β = 90
c = 165.6 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH mirror 2001-03-30
Diffraction Radiation
Monochromator Protocol
Si (111) double crystal system MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 17-ID 0.9791, 0.9793, 1.00 APS 17-ID

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
2.4 30 99.6 0.067 -- -- 3.9 22467 22467 0.0 0.0 --
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)
2.4 2.51 100.0 0.314 -- -- -- --

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 2.4 20.0 -- 2.0 21646 20694 1018 -- -- -- 0.211 0.282 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 2.4 2.49 -- -- -- 0.258 0.334 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 57.0
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 2.1
c_bond_d 0.02
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4435
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 140

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
SHELXD, MLPHARE, DM Structure Solution
CNS Structure Refinement
Software
Software Name Purpose
DM model building
SCALEPACK data reduction
MLPHARE model building
DENZO data collection
CNS refinement
SHELXD model building