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Reduced sweetness of a monellin (MNEI) mutant results from increased protein flexibility and disruption of a distant poly-(L-proline) II helix
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1IV9
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 5.6 293 0.2 M Li2SO4, 0.1M HEPES and 25% w/v PEG4000, pH 5.6, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.32 47.04
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 29.889 α = 84.9 b = 39.652 β = 80.25 c = 45.153 γ = 83.9
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 RIGAKU RAXIS IV 2006-04-20 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) 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 22.43 3.5 17472
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 1IV9 1.8 24.63 16484 933 92.8 0.1792 0.17686 0.1826 0.21892 0.228 RANDOM 23.586
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 0.01
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 36.471 r_dihedral_angle_3_deg 14.783 r_dihedral_angle_4_deg 12.506 r_dihedral_angle_1_deg 7.967 r_scangle_it 3.884 r_scbond_it 2.603 r_mcangle_it 1.491 r_angle_refined_deg 1.456 r_mcbond_it 1.024 r_nbtor_refined 0.311
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 36.471 r_dihedral_angle_3_deg 14.783 r_dihedral_angle_4_deg 12.506 r_dihedral_angle_1_deg 7.967 r_scangle_it 3.884 r_scbond_it 2.603 r_mcangle_it 1.491 r_angle_refined_deg 1.456 r_mcbond_it 1.024 r_nbtor_refined 0.311 r_nbd_refined 0.247 r_symmetry_vdw_refined 0.176 r_xyhbond_nbd_refined 0.138 r_chiral_restr 0.109 r_symmetry_hbond_refined 0.106 r_bond_refined_d 0.014 r_gen_planes_refined 0.006 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 1584 Nucleic Acid Atoms Solvent Atoms 219 Heterogen Atoms
Software Software Software Name Purpose CrystalClear data collection AMoRE phasing REFMAC refinement MOSFLM data reduction SCALA data scaling