4TNH

RT XFEL structure of Photosystem II in the dark state at 4.9 A resolution


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1BATCH MODE72984% PEG2000, 5 mM calcium chloride, 100 mM PIPES, pH 7.0, BATCH, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
3.6666.36

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 132.885α = 90
b = 229.033β = 90
c = 307.715γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298PIXELCS-PAD detectorKB mirrors2013-03-03MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1FREE ELECTRON LASERSLAC LCLS BEAMLINE CXI1.77SLAC LCLSCXI

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
14.972.9399.740.765.441292171.542951793
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
14.95.0898.63.97.6

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-VALUE3bz14.9000068087472.92500394521.3812641781403398697.70744061550.2810902123560.2805468213230.291771032118206.869966682
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_d18.652397114
f_angle_d0.753583798269
f_chiral_restr0.0293545992986
f_bond_d0.00478233972041
f_plane_restr0.0040322832651
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms41052
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms9192

Software

Software
Software NamePurpose
PHENIXrefinement
cctbx.xfeldata reduction