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Isoreticular co-crystal 1 with asymmetrical expanded duplex (31mer) containing insert sequence TGATGAGCAG and loaded with ultrabithorax homeodomain
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7RVA experimental model PDB 1B8I
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 6.5 298 40mM Magnesium acetate, 1.5M Lithium sulfate, 50mM MES pH 6.5. The crystal was crosslinked with 45mg/mL EDC overnight, and then looped into a solution of 50mM potassium chloride, 4mM calcium chloride, 10% glycerol, and 10mM Tris hydrochloride for 1 hour. The drop was then supplemented with 40 micromolar Ultrabithorax homeodomain.
Crystal Properties Matthews coefficient Solvent content 5.59 77.99
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 73.917 α = 90 b = 126.606 β = 90.92 c = 137.886 γ = 90
Symmetry Space Group I 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 EIGER X 9M 2025-05-07 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ALS BEAMLINE 8.2.1 1.0 ALS 8.2.1
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 3.67 47.16 98.4 0.202 0.243 0.132 0.997 2.8 3.3 13732 157.05
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 3.67 4.02 99.3 1.619 1.923 1.026 0.368 0.7 3.4
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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 3.67 47.16 1.34 13695 1356 98.03 0.2745 0.272 0.2721 0.2949 0.2949 226.16
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 26.3714 f_angle_d 1.1298 f_chiral_restr 0.1184 f_plane_restr 0.0103 f_bond_d 0.0097
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1899 Nucleic Acid Atoms 1271 Solvent Atoms Heterogen Atoms 1
Software Software Software Name Purpose PHENIX refinement XDS data reduction XSCALE data scaling PHASES phasing Coot model building