2WQR

The high resolution crystal structure of IgE Fc


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
18.5291THE PROTEIN CONCENTRATION WAS 1.9 MG/ML. CRYSTALS GREW AT 18 DEGREES C WITH 14% PEG 8000, 200MM LITHIUM SULPHATE, 100MM TRIS-HCL PH 8.5 AS PRECIPITANT.
Crystal Properties
Matthews coefficientSolvent content
2.754

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 130.502α = 90
b = 75.282β = 90
c = 79.144γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315MIRRORS2008-07-31MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I04DiamondI04

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.95099.90.0726.37.3620351.3331.56
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.91.971000.532.97.4

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 1O0V1.9361.3361875312099.90.19490.19280.23447.98
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
-1.38573.3369-1.9512
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d21.457
f_angle_d1.001
f_chiral_restr0.066
f_bond_d0.005
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5017
Nucleic Acid Atoms
Solvent Atoms533
Heterogen Atoms175

Software

Software
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing