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5-methyltetrahydrofolate corrinoid/iron sulfur protein methyltransferase complexed with methyltetrahydrofolate to 2.2 Angsrom resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1F6Y PDB ENTRY 1F6Y
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.5 298 8-15% PEGmme 5000, 0.05M Calcium acetate, 20% Glycerol, 0.05M HEPES buffer; 3-fold molar excess of the MTHF substrate (Schricks Labolatories, Jona, Switzerland). The supersaturation of the precipitant solution required dilution of the protein-CH3-H4folate complex by 50-100-fold in order to obtain single crystals., pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.33 47.24
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 50.159 α = 90 b = 78.547 β = 90 c = 135.617 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 BRANDEIS - B4 2000-07-30 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X12C 0.91938 NSLS X12C
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 2.2 30.92 96.2 0.086 0.086 11.5 3.8 26806 14.8
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) 2.2 2.26 87.9 0.206 3.5 3.5 1750
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) 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 1F6Y 2.2 30.88 26763 24177 2586 96.04 0.178 0.172 0.1913 0.23 0.1836 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 c_angle_deg 1.018 c_bond_d 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3994 Nucleic Acid Atoms Solvent Atoms 435 Heterogen Atoms 68
Software Software Software Name Purpose CBASS data collection EPMR phasing CNS refinement MOSFLM data reduction CCP4 data scaling