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alpha/beta-Peptide helix crystallized from detergent solution: GCN4-pLI side chain sequence on an (alpha-alpha-beta-alpha-beta-alpha-beta) backbone with cyclic beta-residues
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2OXK PDB ENTRY 2OXK
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7 298 0.5 M sodium chloride, 5 mM cetyl-trimetylammonium bromide, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 3.48 64.66
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 47.99 α = 90 b = 47.99 β = 90 c = 100.533 γ = 90
Symmetry Space Group I 41 2 2
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 BRUKER SMART 6000 confocal mirrors 2008-08-02 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE BRUKER AXS MICROSTAR 1.5418
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 2.1 24 100 0.053 22.6 10.9 3697
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) 2.1 2.2 100 0.314 4.1 5.5
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 2OXK 2.1 24 3519 160 100 0.21988 0.21926 0.2174 0.23272 0.2236 RANDOM 30.841
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] 0.26 0.26 -0.53
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 47.34 r_dihedral_angle_3_deg 19.933 r_dihedral_angle_1_deg 8.282 r_scangle_it 3.482 r_angle_refined_deg 2.202 r_scbond_it 1.991 r_mcangle_it 1.784 r_dihedral_angle_4_deg 1.65 r_angle_other_deg 1.248 r_mcbond_it 0.964
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 47.34 r_dihedral_angle_3_deg 19.933 r_dihedral_angle_1_deg 8.282 r_scangle_it 3.482 r_angle_refined_deg 2.202 r_scbond_it 1.991 r_mcangle_it 1.784 r_dihedral_angle_4_deg 1.65 r_angle_other_deg 1.248 r_mcbond_it 0.964 r_mcbond_other 0.145 r_chiral_restr 0.124 r_bond_refined_d 0.014 r_gen_planes_refined 0.003 r_bond_other_d 0.002 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_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 583 Nucleic Acid Atoms Solvent Atoms 22 Heterogen Atoms 62
Software Software Software Name Purpose PROTEUM PLUS data collection PHASER phasing REFMAC refinement PROTEUM PLUS data reduction PROTEUM PLUS data scaling