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Crystal Structure of Drosophila DHX36 helicase in complex with polyT
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 5N8R
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 6.5 298 0.1M MES monohydrate-imidazole
20mM sodium formate
20mM ammonium acetate
20mM sodium citrate tribasic hydrate
20mM sodium oxamate
20mM potassium sodium tartrate tetrahydrate
Crystal Properties Matthews coefficient Solvent content 2.69 54.3
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 297.981 α = 90 b = 49.923 β = 115.01 c = 163.847 γ = 90
Symmetry Space Group C 1 2 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 PIXEL DECTRIS PILATUS 6M 2015-04-06 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SSRF BEAMLINE BL19U1 0.9754 SSRF BL19U1
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) CC (Half) 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 2.88 81.1 99.37 0.098 0.991 8.91 3.3 50207 2
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.88 2.983 99.82 0.489 0.748 2.24 3.5
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 (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 FREE R-VALUE 5N8R 2.88 81.1 1.34 50228 2479 99.38 0.2112 0.2073 0.211 0.2847 0.2863 5%
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 f_dihedral_angle_d 17.251 f_angle_d 1.781 f_chiral_restr 0.091 f_bond_d 0.014 f_plane_restr 0.012
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 13659 Nucleic Acid Atoms 400 Solvent Atoms Heterogen Atoms 10
Software Software Software Name Purpose PHENIX refinement XDS data reduction Aimless data scaling PHASER phasing