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Serial Time resolved crystallography of Photosystem II using a femtosecond X-ray laser. The S state after two flashes (S3)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3ARC
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 Free interface diffusion 7 283 100 mM Pipes pH 7.0, 5 mM CaCl2, 10 mM tocopherol, and 10-17% PEG 2000 , Free interface diffusion, temperature 283K, temperature 283.0K
Crystal Properties Matthews coefficient Solvent content 4.1 70.02
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 136.61 α = 90 b = 228.09 β = 90 c = 308.68 γ = 90
Symmetry Space Group P 21 21 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 283 PIXEL CS-PAD CXI-1 2012-01-25 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 FREE ELECTRON LASER SLAC LCLS BEAMLINE CXI 2.05 SLAC LCLS CXI
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (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 1 5.5 102.295 99.88 33992 32066
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 5.5 5.662 100
Refinement Statistics Diffraction ID Structure Solution Method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT 3ARC 5.5 102.295 1.35 32066 33992 1626 99.88 0.2812 0.2806 0.2891 0.2906 0.2939
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]
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 41274 Nucleic Acid Atoms Solvent Atoms Heterogen Atoms 8320
Software Software Software Name Purpose Cheetah data collection PHASER phasing PHENIX refinement CrystFEL data reduction CrystFEL data scaling