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STRUCTURE OF THE K7A/R10A/K66A VARIANT OF RIBONUCLEASE A
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1RPH PDB ENTRY 1RPH
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 4.5 CRYSTALS WERE PREPARED USING THE HANGING DROP METHOD. LYOPHILIZED K7A/R10A/K66A RNASE A WAS DISSOLVED IN UNBUFFERED WATER TO A CONCENTRATION OF 60MG/ML. DROPS CONSISTING OF PROTEIN SOLUTION (1.5UL), WATER (1.5UL), AND RESERVOIR SOLUTION (3.0UL) WERE SUSPENDED OVER 0.5 ML OF RESERVOIR SOLUTION [0.1M SODIUM ACETATE BUFFER, PH 4.5, CONTAINING 36% PEG 4000., vapor diffusion - hanging drop
Crystal Properties Matthews coefficient Solvent content 3.25 60
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 68.15 α = 90 b = 68.15 β = 90 c = 65.51 γ = 120
Symmetry Space Group P 32 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 273 AREA DETECTOR SIEMENS LONG MIRRORS 1997-09-11 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RUH2R
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 30 91 0.023 20 2.3 33804 0.33
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 2.1 84 0.17
Refinement Statistics Diffraction ID Structure Solution Method Starting model Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Work (Depositor) R-Free (Depositor) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT PDB ENTRY 1RPH 2 30 14929 14929 91 0.174
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 t_dihedral_angle_d 17.868 t_angle_deg 2.236 t_it 1 t_nbd 0.027 t_bond_d 0.01 t_gen_planes 0.01 t_trig_c_planes 0.005 t_incorr_chiral_ct t_pseud_angle
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 937 Nucleic Acid Atoms Solvent Atoms 82 Heterogen Atoms 4
Software Software Software Name Purpose XDS data scaling XCALIBRE data reduction AMoRE phasing TNT refinement XDS data reduction XCALIBRE data scaling