X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details 18% (W/V) PEG 2000 MONOMETHYLETHER, 50 MM MES,200 MM AMMONIUM ACETATE, 2 MM IRON(II) SULPHATE, 10 MM POTASSIUM ALPHA-KETOGLUTARATE, 10 MM SODIUM ASCORBATE, 10 MM DIHYDROQUERCETIN (IN MEOH TO GIVE A FINAL CONC. OF 10%(V/V) MEOH), PH 6.5, ANAEROBIC (AR ATMOSPHERE,< 0.5 PPM OXYGEN)

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 62.03 α = 90
b = 74.36 β = 90
c = 88.11 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC CCD -- 2001-02-15
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX9.6 -- SRS PX9.6

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
2.2 30 98.8 0.074 -- -- 2.9 -- 20932 -- 0.0 25.9
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)
2.2 2.26 99.2 0.28 -- 3.9 2.9 --

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 2.2 25.0 -- 0.0 -- 20926 876 98.2 -- 0.204 0.204 0.237 RANDOM
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 2.2 2.34 -- 146 3303 0.234 0.278 0.023 98.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 26.1
Anisotropic B[1][1] -0.89
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 9.47
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -8.59
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.8
c_mcangle_it 2.05
c_angle_deg 1.29
c_scangle_it 3.05
c_bond_d 0.0071
c_scbond_it 2.09
c_mcbond_it 1.29
c_dihedral_angle_d 22.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.25
Luzzati Sigma A (Observed) 0.21
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.31
Luzzati Sigma A (R-Free Set) 0.27
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2709
Nucleic Acid Atoms 0
Heterogen Atoms 79
Solvent Atoms 210

Software

Software
Software Name Purpose
CNS refinement version: 1.1
MOSFLM data reduction
SCALA data scaling
AMoRE phasing