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X-RAY STRUCTURE OF BACTERIORHODOPSIN FROM MICROCRYSTALS GROWN IN LIPIDIC CUBIC PHASES
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2BRD PDB ENTRY 2BRD
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 5.6 PROTEIN FROM THE PURPLE MEMBRANE WAS DELIPIDATED AND SOLUBILIZED IN OCTYL GLUCOSIDE. PROTEIN WAS CRYSTALLIZED FROM 60 - 70% (W/W) MONOOLEIN, 0.7 - 4.0 M NA/K - PHOSPHATE IN A PHOSPHATE BUFFER AT PH 5.6, AT 20C AND IN THE DARK. THE MIXTURE WAS CENTRIFUGED AT 10000G FOR 150 MN PRIOR TO CRYSTALLISATION.
Crystal Properties Matthews coefficient Solvent content 2.39 48
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 61.76 α = 90 b = 61.76 β = 90 c = 104.16 γ = 120
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 IMAGE PLATE MARRESEARCH ELLIPSOIDAL MIRROR 1996-08-26 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID13 ESRF ID13
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (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 2.35 10 91.2 0.1 4.7 2 8045 45.5
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.35 2.56 90.4 0.266 2.4 1.6
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) 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 2BRD 2.35 5 2.5 6564 300 77.8 0.2582 0.2582 0.2742 0.317 0.2795 RANDOM 75
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 Key Refinement Restraint Deviation x_dihedral_angle_d 20.82 x_angle_deg 1.491 x_improper_angle_d 1.188 x_bond_d 0.008 x_bond_d_na x_bond_d_prot x_angle_d x_angle_d_na x_angle_d_prot x_angle_deg_na
RMS Deviations Key Refinement Restraint Deviation x_dihedral_angle_d 20.82 x_angle_deg 1.491 x_improper_angle_d 1.188 x_bond_d 0.008 x_bond_d_na x_bond_d_prot x_angle_d x_angle_d_na x_angle_d_prot x_angle_deg_na x_angle_deg_prot x_dihedral_angle_d_na x_dihedral_angle_d_prot x_improper_angle_d_na x_improper_angle_d_prot x_mcbond_it x_mcangle_it x_scbond_it x_scangle_it
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1694 Nucleic Acid Atoms Solvent Atoms 26 Heterogen Atoms 20
Software Software Software Name Purpose X-PLOR model building X-PLOR refinement DENZO data reduction CCP4 data scaling X-PLOR phasing