X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Details THIS STRUCTURE WAS BUILT USING DATA COLLECTED ON ONE CRYSTAL. THE CRYSTAL SUFFERED FROM MEROHEDRAL TWINNING, WHERE TWO TWIN COMPONENTS CONTRIBUTE TO DIFFERENT DEGREES TO THE DIFFRACTION INTENSITIES. THE DATA SET WAS MODIFIED TO REMOVE THE CONTRIBUTION FROM THE MINOR TWIN COMPONENT, BEFORE THE REFINEMENT. THE MODIFICATION IS CARRIED OUT BY REMOVAL OF SOME REFLECTIONS AND BY INTENSITY CORRECTIONS OF OTHERS. THE DEPOSITED STRUCTURE FACTORS HAVE BEEN MODIFIED.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 229.5 α = 90
b = 95.6 β = 90
c = 86.8 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR XUONG-HAMLIN MULTIWIRE -- 1991-05-20
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- 1.5418 -- --

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
2.6 50 83.0 0.05 -- -- 2.1 -- 26271 -- -- --

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
-- 2.6 7.5 -- 2.0 -- 15621 -- 82.5 -- 0.193 0.193 0.255 --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 17.6
RMS Deviations
Key Refinement Restraint Deviation
x_angle_deg 2.1
x_improper_angle_d 1.9
x_bond_d 0.019
x_dihedral_angle_d 25.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 13944
Nucleic Acid Atoms 0
Heterogen Atoms 234
Solvent Atoms 92

Software

Software
Software Name Purpose
MADNES data collection
X-PLOR model building version: 3.1
X-PLOR refinement version: 3.1
MADNES data reduction
X-PLOR phasing version: 3.1