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X-Ray Structure of the Nucleosome Core Particle, NCP146b, at 2.6 A Resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1AOI PDB entry 1AOI
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 6 293 manganese chloride, potassium chloride, potassium cacodylate, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.51 50.93
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 105.3 α = 90 b = 175.69 β = 90 c = 109.53 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 103 IMAGE PLATE MARRESEARCH 1996-06-02 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID09 0.85 ESRF ID09
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 2.6 30 89.5 0.072 3.7 67577 60481 1 1 54.8
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) 2.6 2.69 45.7 0.157
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 Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB entry 1AOI 2.6 6 52906 52906 1043 91.6 0.247 0.247 0.246 0.3 RANDOM 51.6
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] 5.75 6.4 -12.15
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 18.5 c_scangle_it 3.03 c_mcangle_it 2.58 c_scbond_it 2.07 c_mcbond_it 1.59 c_angle_deg 1 c_improper_angle_d 1 c_bond_d 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 6015 Nucleic Acid Atoms 5980 Solvent Atoms 433 Heterogen Atoms 10
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling CNS refinement CNS phasing