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N-Terminal Domain of Bombyx mori Fibroin Mediates the Assembly of Silk in Response to pH Decrease
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 4.6 1.2M (NH4)2SO4, 0.1M SODIUM ACETATE PH 4.6, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 289K
Crystal Properties Matthews coefficient Solvent content 2.76 55.37
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 74.52 α = 90 b = 74.52 β = 90 c = 208.23 γ = 120
Symmetry Space Group P 65 2 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray CCD RAYONIX MX225HE 2009-10-07 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SSRF BEAMLINE BL17U SSRF BL17U
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 3 50 99.4 0.112 40.2 31.9 7427 101.75
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 3 3.05 94.5 0.654 3.3 19.1
Refinement Statistics Diffraction ID Structure Solution Method Resolution (High) Resolution (Low) Cut-off Sigma (F) 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) Mean Isotropic B X-RAY DIFFRACTION SAD 3 37.26 1.33 7294 333 98.4 0.312 0.311 0.3126 0.336 0.3483
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] 14.22 14.22 -28.44
RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 20.536 f_angle_d 1.145 f_chiral_restr 0.077 f_bond_d 0.008 f_plane_restr 0.003
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1165 Nucleic Acid Atoms Solvent Atoms Heterogen Atoms
Software Software Software Name Purpose SOLVE phasing PHENIX refinement HKL-2000 data reduction HKL-2000 data scaling