X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.5
Details HANGING DROP VAPOUR DIFFUSION. PROTEIN AT CONCENTRATION 12 MG/ML WAS MIXED WITH AN EQUAL VOLUME OF WELL SOLUTION CONSISTING OF 20% (V/V) ISOPROPANOL, 2% (W/V) PEG 1500, IN 100 MM CITRIC ACID BROUGHT TO PH 5.5 WITH NAOH. CRYSTALS GROW AT 4 DEG. C AND TAKE UP TO 8 WEEKS TO REACH FULL SIZE.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 76.57 α = 90
b = 41.76 β = 90
c = 54.53 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM MIRRORS 2000-02-15
Diffraction Radiation
Monochromator Protocol
DIAMOND C(111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-2 -- ESRF ID14-2

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
1.35 40 97.9 0.047 -- -- 3.8 -- 38263 -- -3.0 12.7
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)
1.35 1.4 83.4 0.142 -- 5.2 2.7 --

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 1.35 40.0 -- 0.0 -- 38263 1921 97.9 -- -- 0.184 0.213 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 21.7
RMS Deviations
Key Refinement Restraint Deviation
p_chiral_restr 0.106
p_planar_tor 5.8
p_mcbond_it 2.299
p_transverse_tor 19.5
p_multtor_nbd 0.257
p_plane_restr 0.0323
p_scbond_it 3.371
p_angle_d 0.029
p_bond_d 0.011
p_singtor_nbd 0.173
p_planar_d 0.036
p_mcangle_it 3.073
p_scangle_it 4.333
p_staggered_tor 13.1
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1423
Nucleic Acid Atoms 0
Heterogen Atoms 27
Solvent Atoms 149

Software

Software
Software Name Purpose
REFMAC refinement
DENZO data reduction
SCALA data scaling
SOLVE phasing