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Crystal structures of a Multidrug-Resistant HIV-1 Protease Reveal an Expanded Active Site Cavity
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model Other higher resolution structure of the same protein
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 295 MES, sodium chloride, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties Matthews coefficient Solvent content 2.44 49.5
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 45.097 α = 90 b = 45.097 β = 90 c = 102.957 γ = 90
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 Osmic Mirrors 2003-03-13 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU FR-D 1.5418
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (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 2.5 23.36 97.6 0.17 0.17 7333 25.3
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work (Depositor) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT higher resolution structure of the same protein 2.6 23.36 2 6422 321 100 0.254 0.254 0.254 0.335 RANDOM 40.3
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] 8.28 8.28 -16.56
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 26.3 c_scangle_it 2.96 c_scbond_it 2.61 c_angle_deg 1.5 c_mcangle_it 1.2 c_improper_angle_d 0.89 c_mcbond_it 0.68 c_bond_d 0.01
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1510 Nucleic Acid Atoms Solvent Atoms 41 Heterogen Atoms 40
Software Software Software Name Purpose CNS refinement CrystalClear data reduction d*TREK data scaling CCP4 phasing