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Insights into the role of nucleotide-dependent conformational change in nitrogenase catalysis: Structural characterization of the nitrogenase Fe protein Leu127 deletion variant with bound MgATP
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 8 24% POLY(ETHYLENE GLYCOL), MW 4000, 0.16 M MGCL2, TRISHYDROCHLORIC ACID, PH 8.5, 20% GLYCEROL, AND 1MM SODIUM DITHIONITE
Crystal Properties Matthews coefficient Solvent content 2.32 50.01
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 70.9 α = 90 b = 133.3 β = 90 c = 61.5 γ = 90
Symmetry Space Group C 2 2 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 93 CCD MARRESEARCH FLAT MIRRORS 2002-12-20 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SSRL BEAMLINE BL9-2 SSRL BL9-2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge 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 2.5 40 97.8 0.086 4.1 4 20818 1.5
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.5 99.9 0.079 5.1 4.2
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION OTHER THROUGHOUT 2.5 8 2.5 22950 99.9 0.2381 0.2381 0.2793 RANDOM
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_angle_deg 2.52 x_bond_d 0.01 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
RMS Deviations Key Refinement Restraint Deviation x_angle_deg 2.52 x_bond_d 0.01 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 x_dihedral_angle_d_na x_dihedral_angle_d_prot x_improper_angle_d 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 2050 Nucleic Acid Atoms Solvent Atoms 99 Heterogen Atoms 36
Software Software Software Name Purpose X-PLOR refinement Blu-Ice data reduction DENZO data reduction MOSFLM data scaling SCALEPACK data scaling SCALA data scaling X-PLOR phasing