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Self-assembly of coiled-coil tetramers in the 1.40 A structure of a leucine-zipper mutant
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2IPZ PDB ENTRY 2IPZ
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 5.4 295 0.1M sodium citrate, 1M ammonium dihydrophosphate, pH 5.4, VAPOR DIFFUSION, HANGING DROP, temperature 295.0K
Crystal Properties Matthews coefficient Solvent content 1.95 37
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 20.117 α = 90 b = 87.875 β = 103.83 c = 35.509 γ = 90
Symmetry Space Group P 1 21 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 2006-02-24 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X4C 0.9795 NSLS X4C
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 1.4 43.94 95.8 0.057 14.1 3.4 22711 22711 15.2
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 1.4 1.43 91.5 0.451 3 3.3 1435
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 (All) 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 2IPZ 1.4 43.94 22711 22711 1177 95.8 0.18506 0.18506 0.18312 0.1836 0.21912 0.2168 RANDOM 25.697
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 -0.06 0.41 -0.45
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.48 r_dihedral_angle_3_deg 13.49 r_dihedral_angle_4_deg 3.989 r_scangle_it 3.766 r_dihedral_angle_1_deg 3.242 r_scbond_it 2.616 r_mcangle_it 1.235 r_angle_refined_deg 1.148 r_mcbond_it 0.865 r_nbtor_refined 0.298
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.48 r_dihedral_angle_3_deg 13.49 r_dihedral_angle_4_deg 3.989 r_scangle_it 3.766 r_dihedral_angle_1_deg 3.242 r_scbond_it 2.616 r_mcangle_it 1.235 r_angle_refined_deg 1.148 r_mcbond_it 0.865 r_nbtor_refined 0.298 r_nbd_refined 0.205 r_symmetry_vdw_refined 0.163 r_symmetry_hbond_refined 0.161 r_xyhbond_nbd_refined 0.114 r_chiral_restr 0.077 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_other r_nbtor_other r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_other r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_mcbond_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1022 Nucleic Acid Atoms Solvent Atoms 129 Heterogen Atoms 20
Software Software Software Name Purpose REFMAC refinement MAR345 data collection DENZO data reduction SCALEPACK data scaling PHASER phasing