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Dynamic switching and partial occupancies of a small molecule inhibitor complex of DHFR
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1RX5 PDB ENTRY 1RX5
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 8 298 30 mg/mL DHFR, 20 mM imidazole at pH 8, 350 mM CaCl2, and 29% PEG-6000, with microseeding. Concentration to 30mg/ml in the presence of inhibitor., VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.09 41.09
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 34.23 α = 90 b = 44.89 β = 90 c = 98.01 γ = 90
Symmetry Space Group P 21 21 21
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 RIGAKU SATURN 944 confocal blue 2009-06-01 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU MICROMAX-007 HF 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 1.76 33 78.2 0.036 3.2 15555 12164 32.6 22.8 21.58
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) 1.76 1.83 12.2 0.095 3.8 1.2
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 (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 PDB ENTRY 1RX5 2.08 23.63 15555 8993 449 0.1968 0.1944 0.1987 0.2426 0.2457 RANDOM 19.77
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] 0.2525 -2.6686 2.4162
RMS Deviations Key Refinement Restraint Deviation t_angle_deg 1.1 t_bond_d 0.01 t_dihedral_angle_d t_incorr_chiral_ct t_pseud_angle t_trig_c_planes t_gen_planes t_it t_nbd t_omega_torsion
RMS Deviations Key Refinement Restraint Deviation t_angle_deg 1.1 t_bond_d 0.01 t_dihedral_angle_d t_incorr_chiral_ct t_pseud_angle t_trig_c_planes t_gen_planes t_it t_nbd t_omega_torsion t_other_torsion t_improper_torsion t_chiral_improper_torsion t_sum_occupancies t_utility_distance t_utility_angle t_utility_torsion t_ideal_dist_contact
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1268 Nucleic Acid Atoms Solvent Atoms 136 Heterogen Atoms 54
Software Software Software Name Purpose StructureStudio data collection PHASER phasing BUSTER refinement d*TREK data reduction