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DISECTING HISTIDINE INTERACTIONS IN RIBONUCLEASE T1 USING ASN AND GLN MUTATIONS
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2AAD PDB ENTRY 2AAD
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 4.2 VAPOR DIFFUSION, HANGING DROP, 20 MG/ML PROTEIN NAOAC BUF. PH 4.2, 0.125 % 2'GMP, 1.25 % CACL2, 47.5 % MPD, vapor diffusion - hanging drop
Crystal Properties Matthews coefficient Solvent content 2.56 52.01
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 58.39 α = 90 b = 58.39 β = 90 c = 133.39 γ = 90
Symmetry Space Group P 41 21 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 293 DIFFRACTOMETER ENRAF-NONIUS FAST COLLIMATOR 1996-02-20 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ENRAF-NONIUS
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 10 96 0.05 10.1 1.3 15698 3 11.8
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) 1.85 1.95 90.7 0.038 7.2 1
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-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 2AAD 2 10 15698 1554 97.1 0.193 0.193 0.255 RANDOM 19.7
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]
RMS Deviations Key Refinement Restraint Deviation x_dihedral_angle_d 26.8 x_scangle_it 4.6 x_scbond_it 3.38 x_mcangle_it 3.14 x_improper_angle_d 3.09 x_angle_deg 2.9 x_mcbond_it 2.04 x_bond_d 0.031 x_bond_d_na x_bond_d_prot
RMS Deviations Key Refinement Restraint Deviation x_dihedral_angle_d 26.8 x_scangle_it 4.6 x_scbond_it 3.38 x_mcangle_it 3.14 x_improper_angle_d 3.09 x_angle_deg 2.9 x_mcbond_it 2.04 x_bond_d 0.031 x_bond_d_na x_bond_d_prot x_angle_d x_angle_d_na x_angle_d_prot x_angle_deg_na x_angle_deg_prot x_dihedral_angle_d_na x_dihedral_angle_d_prot x_improper_angle_d_na x_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1669 Nucleic Acid Atoms 32 Solvent Atoms 29 Heterogen Atoms
Software Software Software Name Purpose Agrovata data collection ROTAVATA data reduction X-PLOR model building X-PLOR refinement CCP4 data scaling ROTAVATA data scaling X-PLOR phasing