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Structure-Guided DOT1L Probe Optimization by Label-Free Ligand Displacement
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1NW3
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 4.9 293 A 5-fold excess of 50 mM 5-iodotubercidin (in DMSO) was mixed with protein and crystallized by using the hanging-drop vapor diffusion method at 20 degree in conditions containing 1.8 M (NH4)2SO4, 0.1 M NaAc-pH4.9. Crystals were transferred into stabilization buffer (2.5 M (NH4)2SO4, 0.1 M NaAc-pH4.9, 0.5 M NaCl), incubated with 100 uM inhibitor.
Crystal Properties Matthews coefficient Solvent content 4.37 71.87
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 151.104 α = 90 b = 151.104 β = 90 c = 53.387 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 100 CCD MARMOSAIC 300 mm CCD 2013-12-13 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 21-ID-D 0.9792 APS 21-ID-D
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 2.4 50 100 0.085 26.2 7.5 27365 42
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 2.4 2.49 100 0.572 5 7.6
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 1NW3 2.41 43.62 1.36 27344 1371 100 0.169 0.168 0.1761 0.197 0.1996 Random selection 56.2
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 13.381 f_angle_d 0.824 f_chiral_restr 0.033 f_bond_d 0.004 f_plane_restr 0.003
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2627 Nucleic Acid Atoms Solvent Atoms 72 Heterogen Atoms 80
Software Software Software Name Purpose PHENIX refinement HKL-2000 data reduction HKL-2000 data scaling MOLREP phasing