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Crystal structure and biophysical properties of a complex between the N-terminal region of SNAP25 and the SNARE region of syntaxin 1a
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION 6.5 294 ammonium sulfate, MES, pH 6.5, VAPOR DIFFUSION, temperature 294K
Crystal Properties Matthews coefficient Solvent content 2.07 40.62
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 59.4 α = 90 b = 65.78 β = 99.5 c = 80.1 γ = 90
Symmetry Space Group C 1 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 4 mirrors 2001-01-11 M MAD
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SSRL BEAMLINE BL9-2 0.9292, 0.9795, 0.9797, 1.005 SSRL BL9-2
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 30 87.8 0.039 0.02 24 2.2 20657 18147 2 2 37
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 2 30 98.8 0.327 3.6 2.4
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MAD THROUGHOUT 2 30 20657 18147 2206 89.8 0.266 0.2662 0.289 0.2914 RANDOM 52.9
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] -2.03 -7.12 17.26 -15.23
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 14.9 c_scangle_it 4.24 c_scbond_it 2.75 c_mcangle_it 2.21 c_mcbond_it 1.41 c_angle_deg 0.9 c_improper_angle_d 0.62 c_bond_d 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2005 Nucleic Acid Atoms Solvent Atoms 52 Heterogen Atoms
Software Software Software Name Purpose CNS refinement DENZO data reduction SCALEPACK data scaling CNS phasing