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Crystal structure of the hMHF1/hMHF2 Histone-Fold Tetramer
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1TAF
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7.8 298 Tracking Code C4, 0.1M Tris pH 7.8, 0.2M LiCl, 0.1M Na2SO4, 17.5% w/v PEG3350, 10% glycerol cryo., vapor diffusion, sitting drop, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.58 52.37
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 40.78 α = 90 b = 91.93 β = 96.3 c = 61.43 γ = 90
Symmetry Space Group P 1 21 1
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 MARMOSAIC 300 mm CCD 2011-03-09 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 23-ID-B 1.033180 APS 23-ID-B
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 2.1 45.97 96.6 0.066 11.71 2.7 26336 25440 -3 -3 40.09
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 2.1 2.15 96.9 0.548 3.5
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 (All) R-Factor (Observed) R-Work (Depositor) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1TAF 2.1 45.97 26336 25419 1278 96.62 0.2 0.201 0.2 0.231 0.2466 RANDOM 29.942
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] -0.99 0.19 1.05 -0.02
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.658 r_dihedral_angle_4_deg 17.13 r_dihedral_angle_3_deg 14.219 r_dihedral_angle_1_deg 4.349 r_angle_refined_deg 1.491 r_angle_other_deg 1.017 r_chiral_restr 0.078 r_bond_refined_d 0.015 r_gen_planes_refined 0.005 r_bond_other_d 0.001
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.658 r_dihedral_angle_4_deg 17.13 r_dihedral_angle_3_deg 14.219 r_dihedral_angle_1_deg 4.349 r_angle_refined_deg 1.491 r_angle_other_deg 1.017 r_chiral_restr 0.078 r_bond_refined_d 0.015 r_gen_planes_refined 0.005 r_bond_other_d 0.001 r_gen_planes_other 0.001
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2683 Nucleic Acid Atoms Solvent Atoms 97 Heterogen Atoms
Software Software Software Name Purpose XSCALE data scaling PHASER phasing REFMAC refinement PDB_EXTRACT data extraction Blu-Ice data collection XDS data reduction