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Atomic Resolution Structure of Squash Trypsin Inhibitor: Unexpected Metal Coordination
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 293 PEG 8000, zinc sulfate, cacodylate, MPD, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K
Crystal Properties Matthews coefficient Solvent content 2.23 44.8
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 47.28 α = 90 b = 58.63 β = 90 c = 19.32 γ = 90
Symmetry Space Group P 21 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 100 CCD MARRESEARCH 2000-04-07 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE BW7A 0.8919 EMBL/DESY, HAMBURG BW7A
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 1.03 15 99.2 0.047 30.7 9.3 27045 27045 -3 12.9
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 1.03 1.07 98.3 0.151 2.73 3.5 2637
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Cut-off Sigma (I) Number Reflections (All) Number Reflections (Observed) 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 Dual-space recycling FREE R 1.03 10 -3 26990 26990 1345 99.1 0.1206 0.1206 0.12 0.129 0.1449 0.1267 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 5 432 517.49
RMS Deviations Key Refinement Restraint Deviation s_non_zero_chiral_vol 0.13 s_zero_chiral_vol 0.106 s_approx_iso_adps 0.091 s_similar_adp_cmpnt 0.056 s_angle_d 0.039 s_from_restr_planes 0.031 s_bond_d 0.025 s_rigid_bond_adp_cmpnt 0.006 s_similar_dist s_anti_bump_dis_restr
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 444 Nucleic Acid Atoms Solvent Atoms 76 Heterogen Atoms 24
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling SHELXD phasing SHELXL-97 refinement