6Y0M

Crystal structure of human CD23 lectin domain N225D, K229E, S252N, T251N mutant


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6.52910.1M sodium-cacodylate pH 6.5, 1M tri-sodium-citrate Crystals were soaked with a solution of 0.1M sodium-cacodylate at pH 7.1, 1.4M tri-sodium-citrate and 10mM CaCl2 for four days before harvesting which also served as a cryoprotectant.
Crystal Properties
Matthews coefficientSolvent content
2.754.5

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 115.186α = 90
b = 115.186β = 90
c = 45.752γ = 120
Symmetry
Space GroupP 6 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 3152014-07-07MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I04-10.92DiamondI04-1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rpim I (All)CC (Half)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
11.549.8899.90.1090.0180.99824.7392915019.3
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.51.5399.70.5380.8081.735.5

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation 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 REPLACEMENTFREE R-VALUE4G9A1.549.8771.3428779143698.720.17050.16840.2119
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]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d10.609
f_angle_d1.316
f_chiral_restr0.086
f_bond_d0.013
f_plane_restr0.009
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1066
Nucleic Acid Atoms
Solvent Atoms159
Heterogen Atoms

Software

Software
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing