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Cobalt hexammine induced tautameric shift in Z-DNA: structure of d(CGCGCA).d(TGCGCG) in two crystal forms.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model Other Z-DNA hexamer with terminal base pairs replaced with A-T base pair.
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.9 293 MPD, cacodylate, cobalt hexammine chloride, spermine., pH 6.9, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 1.76 29.41
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 35.588 α = 90 b = 35.588 β = 90 c = 44.518 γ = 120
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 293 IMAGE PLATE MARRESEARCH 2004-01-25 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU300 1.5418
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 1.86 30 99 0.15 2.4 4.64 2695 2686
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) 1.86 1.93 90.3 0.5274 1 4.34
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 Z-DNA hexamer with terminal base pairs replaced with A-T base pair. 1.86 30 2595 2495 199 99.08 0.295 0.27867 0.27283 0.258 0.34618 0.2907 RANDOM 24.41
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] 0.23 0.11 0.23 -0.34
RMS Deviations Key Refinement Restraint Deviation r_angle_refined_deg 7.235 r_scangle_it 6.848 r_scbond_it 5.62 r_symmetry_hbond_refined 0.483 r_symmetry_vdw_refined 0.47 r_chiral_restr 0.387 r_nbd_refined 0.26 r_xyhbond_nbd_refined 0.163 r_bond_refined_d 0.042 r_gen_planes_refined 0.026
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms Nucleic Acid Atoms 324 Solvent Atoms 18 Heterogen Atoms 7
Software Software Software Name Purpose REFMAC refinement XDS data reduction AUTOMAR data reduction AMoRE phasing