X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7
Details CRYSTALS WERE GROWN USING THE HANGING DROP METHOD OF VAPOUR DIFFUSION FROM TRIALS WITH AMMONIUM SULPHATE IN THE CONCENTRATION RANGE 60-80% SATURATION IN 50MM SODIUM PHOSPHATE BUFFER PH 8.0 CONTAINING 1MM EDTA WITH A PROTEIN CONCENTRATION OF 10-15MG/ML. CRYSTALS APPEAR OVER 1-3 DAYS., pH 7.0

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 94.38 α = 90
b = 62.31 β = 127.26
c = 77.42 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 295
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- --
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX9.5 -- SRS PX9.5

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
1.83 20 79.9 0.042 -- -- 1.5 -- 26539 -- -3.0 23.0
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)
1.83 1.86 83.2 0.23 -- 2.5 1.5 --

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
MOLECULAR REPLACEMENT 1.83 10.0 -- 0.0 -- 26539 2037 81.0 -- 0.169 0.167 0.202 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 27.1
RMS Deviations
Key Refinement Restraint Deviation
p_transverse_tor 25.46
p_staggered_tor 20.18
p_planar_tor 2.3
p_multtor_nbd 0.25
p_bond_d 0.017
p_angle_d 0.048
p_planar_d 0.048
p_mcbond_it 3.18
p_mcangle_it 4.4
p_scbond_it 6.8
p_scangle_it 10.3
p_plane_restr 0.013
p_chiral_restr 0.17
p_singtor_nbd 0.23
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.2
Luzzati Resolution Cutoff (Low) 10.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2208
Nucleic Acid Atoms 0
Heterogen Atoms 64
Solvent Atoms 197

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
AMORE Structure Solution
CCP4 Structure Refinement
Software
Software Name Purpose
CCP4 refinement
AMORE model building