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Crystal structure of d(GCGAGAGC): the DNA quadruplex structure split from the octaplex
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7 277 2-methyl-2,4-pentanediol, spermine tetrahydrochloride, sodium chloride, potassium chloride, sodium cacodylate , pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties Matthews coefficient Solvent content 2.21 44.36
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 33.81 α = 90 b = 43.47 β = 90 c = 64.2 γ = 90
Symmetry Space Group I 2 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 100 CCD ADSC QUANTUM 4 2001-05-15 M MAD
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON PHOTON FACTORY BEAMLINE BL-18B 1.0, 0.91961, 0.92020 Photon Factory BL-18B
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 1.8 32 98.1 0.05 0.05 7.7 6.2 4553 4543
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) 1.8 1.89 88.6 0.265 0.265 2.6 3.8 583
Refinement Statistics Diffraction ID Structure Solution Method Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Work (Depositor) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MAD 1.8 9 3 4594 4227 436 92 0.225 0.249 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_dihedral_angle_d 22.3 c_angle_deg 0.9 c_improper_angle_d 0.8 c_bond_d 0.004
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms Nucleic Acid Atoms 332 Solvent Atoms 110 Heterogen Atoms 1
Software Software Software Name Purpose MOSFLM data reduction SCALA data scaling SOLVE phasing CNS refinement CCP4 data scaling