4KS6
Crystal structure of the catalytic domain of botulinum neurotoxin BoNT/A C134S mutant with covalent inhibitor that modifies Cys-165 causing disorder in 166-174 stretch
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6 | 293 | protein complex - 6 microL LCA C134S at 145 microM + 1.4 microL KG23 at 1.25 milli-M, Reservoir - 17.5% PEG 600, 0.065 M HEPES pH 7.5. Cryoprotectant - CryoProtX CM1, 10% PEG 20K, 100 milliM CHC (citric acid, HEPES, CHES - 40% pH 4 / 60% pH 10), VAPOR DIFFUSION, SITTING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.11 | 41.75 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 65.634 | α = 90 |
b = 65.634 | β = 90 |
c = 201.725 | γ = 90 |
Symmetry | |
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Space Group | P 43 21 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | CCD | ADSC QUANTUM 315r | mirrors | 2011-06-13 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID23-1 | 0.97240 | ESRF | ID23-1 |
Data Collection
Overall | |||||||||||||||||||
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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 | 1.79 | 50 | 99.2 | 0.377 | 0.365 | 9.79 | 15.4 | 42673 | 42323 | -3 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 1.79 | 1.9 | 94.9 | 4.886 | 4.726 | 0.86 | 15.42 |
Refinement
Statistics | |||||||||||||||||||
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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 | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 4ELC | 1.93 | 62.41 | 42323 | 32454 | 1724 | 99.96 | 0.19561 | 0.19255 | 0.25199 | RANDOM | 26.766 |
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] | |
-0.09 | -0.09 | 0.18 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 38.606 |
r_dihedral_angle_3_deg | 14.553 |
r_dihedral_angle_4_deg | 13.167 |
r_dihedral_angle_1_deg | 6.166 |
r_scangle_it | 5.592 |
r_scbond_it | 3.786 |
r_mcangle_it | 2.691 |
r_mcbond_it | 1.731 |
r_angle_refined_deg | 1.514 |
r_chiral_restr | 0.117 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3502 |
Nucleic Acid Atoms | |
Solvent Atoms | 374 |
Heterogen Atoms | 53 |
Software
Software | |
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Software Name | Purpose |
DNA | data collection |
REFMAC | refinement |
PHENIX | refinement |
XDS | data reduction |
XDS | data scaling |
REFMAC | phasing |