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Crystal Structure of cyanobacterial Photosystem II
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2AXT PDB ENTRY 2AXT
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 batch 7 298 PEG2000, PIPES, magnesium chloride, pH7.0, batch, temperature 298K
Crystal Properties Matthews coefficient Solvent content 3.6 60.46
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 127.692 α = 90 b = 225.403 β = 90 c = 306.106 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 100 CCD ADSC QUANTUM 4 2005-02-24 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID14-2 ESRF ID14-2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (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 2.9 30 99.4 0.085 0.104 13.5 12.6 193457 193457 -3 73.4
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.9 3 98.1 0.409 0.533 2.22 5.3 18331
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation 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) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 2AXT 2.9 10 2 193457 186169 3742 97.7 0.249 0.249 0.2428 0.292 0.2797 RANDOM 76
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] 30.22 -6.56 -23.66
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 18.5 c_scangle_it 3.16 c_scbond_it 2.31 c_mcangle_it 2.03 c_improper_angle_d 1.81 c_angle_deg 1.5 c_mcbond_it 1.2 c_bond_d 0.01
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 20526 Nucleic Acid Atoms Solvent Atoms Heterogen Atoms 4591
Software Software Software Name Purpose CNS refinement XDS data reduction XDS data scaling CNS phasing