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_angle_d 0.048
p_mcbond_it 3.18
p_scbond_it 6.8
p_plane_restr 0.013
p_singtor_nbd 0.23
p_bond_d 0.017
p_chiral_restr 0.17
p_planar_d 0.048
p_scangle_it 10.3
p_staggered_tor 20.18
p_planar_tor 2.3
p_multtor_nbd 0.25
p_mcangle_it 4.4
p_transverse_tor 25.46
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

Software
Software Name Purpose
AMoRE phasing
CCP4 refinement
DENZO data reduction
SCALEPACK data scaling