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Ultra-high resolution structure of d(CGCGCG)2 Z-DNA
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1ICK PDB ENTRY 1ICK
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 7 293 DNA water solution mixed 1:1 v/v with 10% MPD, 12 mM spermine tetra-HCl, 40 mM HEPES pH 7.0 and equilibrated against 35% MPD, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 1.7 27.77
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 17.88 α = 90 b = 31.42 β = 90 c = 43.9 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 ADSC QUANTUM 315 FOCUSING MIRRORS 2010-04-25 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 24-ID-C APS 24-ID-C
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 0.55 30 84.5 0.057 0.057 16.7 2.5 130650 -3 2.45
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 0.55 0.57 53 0.276 1.7
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) 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 1ICK 0.55 30 4 130650 1724 84.5 0.08 0.078 0.078 0.0823 0.085 0.0766 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]
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms Nucleic Acid Atoms 240 Solvent Atoms 128 Heterogen Atoms 14
Software Software Software Name Purpose SCALEPACK data scaling SHELX refinement PDB_EXTRACT data extraction HKL-2000 data reduction HKL-2000 data scaling SHELXL refinement