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Crystal structure of (CENP-A/H4)2 heterotetramer
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3NQU PDB ENTRY 3NQU
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 295 0.17 M ammonium sulfate, 0.085 M sodium cacodylate (pH 6.5), 25.5% PEG-8000, 15% glycerol, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties Matthews coefficient Solvent content 2.4 48.86
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 62.869 α = 90 b = 62.869 β = 90 c = 159.512 γ = 120
Symmetry Space Group P 65 2 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 193 CCD ADSC QUANTUM 315 2010-04-21 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ALS BEAMLINE 8.2.2 1.00 ALS 8.2.2
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 2.08 54.45 97.56 0.083 0.057 23.39 8.22 11876 11585
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 2.08 2.21 87.7 0.447 0.535 4.3 7.4 1825
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-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 3NQU 2.1 20 11000 10961 550 99.65 0.18249 0.18249 0.1797 0.2191 0.24141 0.283 RANDOM 38.104
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] -1.63 -0.81 -1.63 2.44
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 28.232 r_dihedral_angle_4_deg 17.462 r_dihedral_angle_3_deg 14.489 r_dihedral_angle_1_deg 5.339 r_scangle_it 3.825 r_scbond_it 2.237 r_angle_refined_deg 1.329 r_mcangle_it 1.196 r_mcbond_it 0.636 r_chiral_restr 0.088
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 28.232 r_dihedral_angle_4_deg 17.462 r_dihedral_angle_3_deg 14.489 r_dihedral_angle_1_deg 5.339 r_scangle_it 3.825 r_scbond_it 2.237 r_angle_refined_deg 1.329 r_mcangle_it 1.196 r_mcbond_it 0.636 r_chiral_restr 0.088 r_bond_refined_d 0.014 r_gen_planes_refined 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1162 Nucleic Acid Atoms Solvent Atoms 136 Heterogen Atoms 20
Software Software Software Name Purpose HKL-2000 data collection PHASER phasing REFMAC refinement XDS data reduction XDS data scaling