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Structure of a strand-swapped dimeric form of CTLA-4
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1I81 PDB ENTRY 1I81
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 7.5 0.02 M MAGNESIUM CHLORIDE, 0.1 M HEPES PH 7.5, 22 % W/V POLYACRYLIC ACID 5100 SODIUM SALT, 0.4 M NDSB-256 (OR 6 % 1,6-DIAMINOHEXANE).
Crystal Properties Matthews coefficient Solvent content 2.87 57.16
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 42.951 α = 90 b = 42.951 β = 90 c = 140.101 γ = 120
Symmetry Space Group P 31 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 IMAGE PLATE MAR scanner 345 mm plate 2006-02-17 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU
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 2.6 18.6 85 0.04 29.1 22.1 4289 2 58.27
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 2.6 2.7 45.8 0.2 9 21.3
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 PDB ENTRY 1I81 2.6 18.6 4289 189 89.13 0.19385 0.19157 0.2026 0.24501 0.2649 RANDOM 22.845
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] -1.3 -0.65 -1.3 1.96
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.691 r_dihedral_angle_3_deg 17.257 r_dihedral_angle_4_deg 13.121 r_scangle_it 10.46 r_scbond_it 6.67 r_dihedral_angle_1_deg 5.562 r_mcangle_it 5.254 r_mcbond_it 3.142 r_angle_refined_deg 1.024 r_angle_other_deg 0.905
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.691 r_dihedral_angle_3_deg 17.257 r_dihedral_angle_4_deg 13.121 r_scangle_it 10.46 r_scbond_it 6.67 r_dihedral_angle_1_deg 5.562 r_mcangle_it 5.254 r_mcbond_it 3.142 r_angle_refined_deg 1.024 r_angle_other_deg 0.905 r_mcbond_other 0.877 r_chiral_restr 0.061 r_bond_refined_d 0.006 r_gen_planes_refined 0.003 r_bond_other_d 0.001 r_gen_planes_other 0.001 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_mcangle_other r_scbond_other r_scangle_other r_long_range_B_refined 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 906 Nucleic Acid Atoms Solvent Atoms 50 Heterogen Atoms
Software Software Software Name Purpose REFMAC refinement XDS data reduction XDS data scaling PHASER phasing