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Crystal Structure of uncomplexed HIV_1 Protease Subtype A
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2AQU PDB entry 2AQU
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 5 293 1.0 M NaCl, 30 mM citrate, mixed 1:1 with protein, then mix 0.25 part Anapoe 58 detergent., pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.14 42.48
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 62.207 α = 90 b = 62.207 β = 90 c = 82.47 γ = 120
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 MARMOSAIC 225 mm CCD mirrors 2009-03-16 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 22-ID 1.00 APS 22-ID
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 1.7 32.8 94.1 0.089 0.089 12.3 4.4 19874 18760 18.3
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 1.7 1.76 99.2 0.509 2.2 3.7 1964
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) 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 2AQU 1.7 32.8 19874 18760 889 94.1 0.205 0.205 0.2071 0.244 0.2452 SHELLS 28.2
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] 0.49 0.49 -0.99
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 26.5 c_scangle_it 3 c_mcangle_it 2.53 c_scbond_it 1.91 c_angle_deg 1.5 c_mcbond_it 1.47 c_improper_angle_d 0.8 c_bond_d 0.008
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1510 Nucleic Acid Atoms Solvent Atoms 107 Heterogen Atoms
Software Software Software Name Purpose CNS refinement HKL-2000 data reduction HKL-2000 data scaling CNS phasing