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Crystal structure of human RECQ1 helicase containing a flexible linker in complex with tailed duplex DNA
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2WWY
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7 298 0.2 M Sodium malonate (pH=7.0) and 22% PEG 3350
Crystal Properties Matthews coefficient Solvent content 2.45 55.23
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 83.323 α = 90 b = 96.573 β = 106.88 c = 96.806 γ = 90
Symmetry Space Group P 1 21 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 CCD MAR CCD 300 mm Both CM and TM are 1.2 m single-crystal Si with Rh coating 2023-12-22 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON RRCAT INDUS-2 BEAMLINE PX-BL21 0.978930 RRCAT INDUS-2 PX-BL21
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Rpim I (All) 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 2.43 48.28 92.9 0.106 0.124 0.064 0.997 9.6 3.8 35793 40.54
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Rpim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.43 2.57 53.6 1.04 1.22 0.628 0.536 1.3
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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 2WWY 2.43 46.64 1.34 35777 1999 64.91 0.2386 0.2375 0.2389 0.2571 0.2566
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 24.807 f_angle_d 1.414 f_chiral_restr 0.078 f_plane_restr 0.014 f_bond_d 0.012
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 8436 Nucleic Acid Atoms 1397 Solvent Atoms Heterogen Atoms 2
Software Software Software Name Purpose PHENIX refinement STARANISO data scaling Aimless data scaling XDS data reduction PHASER phasing