X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 4
Temperature 291.0
Details 1.6M phosphate, 0.5mM MgCl2, pH 4.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 38.97 α = 90
b = 50.35 β = 90
c = 107.8 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1997-10-02
Diffraction Radiation
Monochromator Protocol
SAGITALLY FOCUSED Si(111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON MPG/DESY, HAMBURG BEAMLINE BW6 1.2 MPG/DESY, HAMBURG BW6

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
1.98 27 96.5 0.041 -- -- 7.38 7641 7037 1.0 1.0 19.1
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)
1.98 2.01 98.7 0.117 -- 12.23 7.0 374

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
SIRAS 1.98 27.0 1.0 1.0 7641 7037 350 92.0 0.209 0.197 0.193 0.241 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 21.3
c_angle_deg 1.3
c_bond_d 0.01
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 738
Nucleic Acid Atoms 0
Heterogen Atoms 6
Solvent Atoms 97

Software

Computing
Computing Package Purpose
MAR Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CCP4 Structure Solution
CNS Structure Refinement
Software
Software Name Purpose
CNS refinement
CCP4 model building
SCALEPACK data reduction
MAR data collection