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Identification of an imidazopyridine scaffold to generate potent and selective TYK2 inhibitors that demonstrate activity in an in vivo psoriasis model
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2B7A
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6 291 25-30% w/v PEG 8000
0.2M Ammonium Acetate
0.1M Na Citrate pH 6.0
Crystal Properties Matthews coefficient Solvent content 2.5 50.89
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 107.653 α = 90 b = 69.542 β = 98.93 c = 50.629 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 CCD ADSC QUANTUM 315r 2009-10-10 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ALS BEAMLINE 5.0.2 1.0 ALS 5.0.2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Sym 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 1.854 50.01 99.8 0.067 19.1 3.6 31177 2
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.854 1.92 99.7 0.424 3.6
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) 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 2B7A 1.854 40 29409 1768 99.24 0.16716 0.16553 0.1669 0.19401 0.1961 RANDOM 27.966
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] 1.07 0.62 -0.58 -0.64
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 39.043 r_dihedral_angle_4_deg 21.842 r_dihedral_angle_3_deg 14.574 r_long_range_B_refined 11.903 r_scbond_it 8.788 r_mcangle_it 6.102 r_dihedral_angle_1_deg 5.506 r_mcbond_it 5.12 r_angle_refined_deg 1.424 r_chiral_restr 0.096
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 39.043 r_dihedral_angle_4_deg 21.842 r_dihedral_angle_3_deg 14.574 r_long_range_B_refined 11.903 r_scbond_it 8.788 r_mcangle_it 6.102 r_dihedral_angle_1_deg 5.506 r_mcbond_it 5.12 r_angle_refined_deg 1.424 r_chiral_restr 0.096 r_bond_refined_d 0.009 r_gen_planes_refined 0.005 r_bond_other_d r_angle_other_deg r_gen_planes_other r_nbd_refined r_nbd_other r_nbtor_refined r_nbtor_other r_xyhbond_nbd_refined r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_refined r_symmetry_vdw_other r_symmetry_hbond_refined r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_mcbond_other r_mcangle_other r_scbond_other r_scangle_it r_scangle_other r_long_range_B_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2447 Nucleic Acid Atoms Solvent Atoms 139 Heterogen Atoms 23
Software Software Software Name Purpose REFMAC refinement HKL-2000 data reduction SCALEPACK data scaling PHASER phasing