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Crystal structure of the catalytic domain of botulinum neurotoxin serotype A with an acetate ion bound at the active site
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3BTA PDB entry 3BTA
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 6.8 293 15% PEG 3350, 0.3M ammonium sulfate, 0.1M Bis-Tris , pH 6.8, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.19 43.77
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 50.767 α = 90 b = 66.292 β = 98.2 c = 64.905 γ = 90
Symmetry Space Group P 1 21 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 315 mirrors 2007-07-23 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X29A 0.979 NSLS X29A
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 1.7 50 86.1 0.047 20.2 13.1 40332 40332 14.8
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) 1.7 1.76 50 0.146 3 7.7 2311
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 3BTA 1.7 40.05 39376 39376 1965 83.9 0.206 0.206 0.208 0.24 0.2415 RANDOM 31
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] 21.46 0.01 -10.62 -10.84
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22.4 c_angle_deg 1.2 c_improper_angle_d 0.71 c_bond_d 0.006 c_bond_d_na c_bond_d_prot c_angle_d c_angle_d_na c_angle_d_prot c_angle_deg_na
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22.4 c_angle_deg 1.2 c_improper_angle_d 0.71 c_bond_d 0.006 c_bond_d_na c_bond_d_prot c_angle_d c_angle_d_na c_angle_d_prot c_angle_deg_na c_angle_deg_prot c_dihedral_angle_d_na c_dihedral_angle_d_prot c_improper_angle_d_na c_improper_angle_d_prot c_mcbond_it c_mcangle_it c_scbond_it c_scangle_it
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3423 Nucleic Acid Atoms Solvent Atoms 247 Heterogen Atoms 15
Software Software Software Name Purpose CNS refinement CBASS data collection HKL-2000 data reduction HKL-2000 data scaling MOLREP phasing ARP/wARP model building