X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.4
Details CRYSTALS WERE GROWN BY THE HANGING DROP VAPOR DIFFUSION METHOD USING PLASTIC TISSUE CULTURE PLATES. 0.4 M SODIUM/POTASSIUM PHOSPHATE BUFFER (PH 6.4) CONTAINING 40 MM CYCLOHEXYLAMMONIUM PHOSPHATE WERE EQUILIBRATED AGAINST 1 ML 0.8 M SODIUM/POTASSIUM PHOSPHATE BUFFER (PH 6.4). CRYSTALLIZATION USUALLY OCCURRED WITHIN 3 DAYS AND THE CRYSTALS REACHED THEIR MAXIMUM SIZE OF 0.5 X 0.5 X 0.1 MM==3== AFTER 5 DAYS AT ROOM TEMPERATURE. (SEE REFERENCE 1 FOR DETAILS.), vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 86.9 α = 90
b = 155.9 β = 91.65
c = 83.85 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 120
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1995-11-27
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL SI(111) --
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
1.8 25 99.8 0.053 -- -- 7.2 -- 103189 -- -- --
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)
1.8 1.84 98.7 0.29 -- -- 3.3 --

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
MIRAS 2.0 10.0 -- -- -- 147378 14800 99.9 -- -- 0.197 0.27 --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 23.1
RMS Deviations
Key Refinement Restraint Deviation
p_transverse_tor 28.06
p_staggered_tor 18.44
p_planar_tor 2.393
p_xyhbond_nbd 0.198
p_multtor_nbd 0.254
p_bond_d 0.016
p_angle_d 0.052
p_planar_d 0.054
p_mcbond_it 3.165
p_mcangle_it 4.148
p_scbond_it 6.263
p_scangle_it 8.58
p_plane_restr 0.013
p_chiral_restr 0.177
p_singtor_nbd 0.203
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.24
Luzzati Resolution Cutoff (Low) 10.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 6284
Nucleic Acid Atoms 0
Heterogen Atoms 14
Solvent Atoms 478

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
PHASES Structure Solution
PROLSQ Structure Refinement
Software
Software Name Purpose
PROLSQ refinement
PHASES model building