5UUI

Crystal Structure of Spin-Labeled T77C TNFa


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP8.5289TNFa (VCID10616, B114005) at 10 mg/ml (in 10 mM HEPES, pH = 7.5, 150 mM NaCl) was mixed with an equal volume of protein solution and a solution containing 24% (w/v) PEG-4000, 0.24 M MgCl2, 0.05% DDM, and 0.1 M HEPES/NaOH, pH=8.5. Crystals were produced by sitting drop vapor diffusion at 16 degrees Celsius. Crystals were then soaked with the same solution supplemented with 10% MTSL for one week and harvested with paraffin oil.
Crystal Properties
Matthews coefficientSolvent content
238.44

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 65.66α = 90
b = 65.66β = 90
c = 84.09γ = 120
Symmetry
Space GroupH 3

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 225 mm CCD2016-03-02MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 21-ID-F0.97872APS21-ID-F

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym I (Observed)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
11.432.83980.0740.99712.713.78260912
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.41.4391.80.5720.6083.02

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-VALUE1tnf1.432.831.9726091211597.960.14780.13930.17
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_d18.184
f_angle_d1.274
f_chiral_restr0.093
f_bond_d0.011
f_plane_restr0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1018
Nucleic Acid Atoms
Solvent Atoms52
Heterogen Atoms

Software

Software
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing