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Two crystal structures of the cytoplasmic molybdate-binding protein ModG suggest a novel cooperative binding mechanism and provide insights into ligand-binding specificity. PEG-grown form with molybdate bound
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1H9J
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION 7.5 VAPOUR DIFFUSION. 20% PEG 4000, 5% ISOPROPANOL IN 100MM HEPES PH7.5 WITH 2MM NA2MOO4., pH 7.50
Crystal Properties Matthews coefficient Solvent content 1.34 41
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 81.96 α = 90 b = 81.96 β = 90 c = 93.417 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 CCD MARRESEARCH 1999-06-15 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) 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 1.65 41 100 0.044 41.7 12.4 28231 -3 19.9
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 1.65 1.68 100 0.107 8.8
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1H9J 1.65 40 28231 1385 98.7 0.191 0.1894 0.226 RANDOM 27
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 p_transverse_tor 51.7 p_staggered_tor 14.3 p_scangle_it 6.918 p_scbond_it 4.995 p_mcbond_it 4.43 p_planar_tor 4.4 p_mcangle_it 3.967 p_multtor_nbd 0.265 p_singtor_nbd 0.18 p_chiral_restr 0.162
RMS Deviations Key Refinement Restraint Deviation p_transverse_tor 51.7 p_staggered_tor 14.3 p_scangle_it 6.918 p_scbond_it 4.995 p_mcbond_it 4.43 p_planar_tor 4.4 p_mcangle_it 3.967 p_multtor_nbd 0.265 p_singtor_nbd 0.18 p_chiral_restr 0.162 p_xyhbond_nbd 0.131 p_planar_d 0.043 p_angle_d 0.038 p_bond_d 0.026 p_plane_restr 0.0233 p_angle_deg p_hb_or_metal_coord p_xhyhbond_nbd p_orthonormal_tor p_special_tor
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1954 Nucleic Acid Atoms Solvent Atoms 79 Heterogen Atoms 32
Software Software Software Name Purpose REFMAC refinement DENZO data reduction SCALEPACK data scaling AMoRE phasing