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The tumor activated anti-CTLA-4 monoclonal antibody XTX101 demonstrates tumor-growth inhibition and tumor-selective pharmacodynamics in mouse models of cancer
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4IOI
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 298 0.2 M Ammonium Citrate Dibasic pH 5.0, 20% PEG 3350
Crystal Properties Matthews coefficient Solvent content 2.48 50.45
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 130.18 α = 90 b = 55.23 β = 118.7 c = 73.86 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 PIXEL RIGAKU HyPix-6000HE 2023-01-03 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) 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 1.8 28.98 96.99 0.0645 0.06861 0.0228 0.999 21.67 8.3 42381
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rpim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.8 1.864 0.5691 0.3137 0.848 2.05
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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 1.8 28.98 39463 2120 97.02 0.18155 0.1798 0.1853 0.21395 0.2246 RANDOM 26.199
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] 0.01 -0.3 -0.18 0.31
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_3_deg 12.503 r_long_range_B_refined 7.287 r_long_range_B_other 7.162 r_dihedral_angle_1_deg 7.119 r_scangle_other 4.805 r_scbond_it 3.559 r_scbond_other 3.409 r_mcangle_it 2.471 r_mcangle_other 2.471 r_mcbond_it 1.832
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_3_deg 12.503 r_long_range_B_refined 7.287 r_long_range_B_other 7.162 r_dihedral_angle_1_deg 7.119 r_scangle_other 4.805 r_scbond_it 3.559 r_scbond_other 3.409 r_mcangle_it 2.471 r_mcangle_other 2.471 r_mcbond_it 1.832 r_mcbond_other 1.827 r_angle_refined_deg 1.282 r_angle_other_deg 0.444 r_chiral_restr 0.067 r_bond_refined_d 0.01 r_gen_planes_refined 0.006 r_bond_other_d 0.001 r_gen_planes_other 0.001
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3298 Nucleic Acid Atoms Solvent Atoms 541 Heterogen Atoms 13
Software Software Software Name Purpose PHENIX refinement XDS data reduction XDS data scaling PHASER phasing