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0.82A resolution crystal structure of alpha-lytic protease at pH 5
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1SSX PDB ENTRY 1SSX
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 4.25 298 1.3M LITHIUM SULFATE, 0.02M TRIS, PH 4.25, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K
Crystal Properties Matthews coefficient Solvent content 2.49 50.58
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 65.68 α = 90 b = 65.68 β = 90 c = 79.457 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 100 CCD ADSC QUANTUM 210 2003-12-05 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SSRL BEAMLINE BL9-1 SSRL BL9-1
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge 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 0.82 19.4 97.9 0.046 38.7 7.42 189525
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 0.82 0.83 84.5 0.375 3
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) 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 REFINEMENT OF 1SSX.PDB FREE R PDB ENTRY 1SSX 0.82 19.4 189104 18758 97.9 0.087 0.081 0.0781 0.093 0.0896 RANDOM
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]
Coordinate Error Structure Solution Method Refinement High Resolution Refinement Low Resolution 37 1343.01 1772.59
RMS Deviations Key Refinement Restraint Deviation s_zero_chiral_vol 0.097 s_approx_iso_adps 0.088 s_non_zero_chiral_vol 0.084 s_angle_d 0.045 s_similar_adp_cmpnt 0.043 s_from_restr_planes 0.035 s_bond_d 0.025 s_rigid_bond_adp_cmpnt 0.005 s_similar_dist s_anti_bump_dis_restr
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1391 Nucleic Acid Atoms Solvent Atoms 451 Heterogen Atoms 67
Software Software Software Name Purpose HKL-2000 data collection SCALEPACK data scaling SHELXL-97 refinement HKL-2000 data reduction