Structure of the C7S mutant of mosquitocidal Cyt1A protoxin obtained by Serial Femtosecond Crystallography on in vivo grown crystals at pH 7
Serial Crystallography (SX)
Starting Model(s)
Initial Refinement Model(s) |
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Type | Source | Accession Code | Details |
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experimental model | PDB | 6T14 | |
Crystallization
Crystalization Experiments |
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ID | Method | pH | Temperature | Details |
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1 | IN CELL | 7 | 300 | In cell crystallization by recombinant expression in a Bacillus thuringiensis serovar israelensis strain devoid of its pBt plasmid. |
Crystal Properties |
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Matthews coefficient | Solvent content |
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1.91 | 35.51 |
Crystal Data
Unit Cell |
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Length ( Å ) | Angle ( ˚ ) |
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a = 65.666 | α = 90 |
b = 65.666 | β = 90 |
c = 164.066 | γ = 120 |
Symmetry |
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Space Group | P 61 2 2 |
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Diffraction
Diffraction Experiment |
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol |
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1 | 1 | x-ray | 300 | PIXEL | CS-PAD CXI-2 | | 2016-11-18 | M | SINGLE WAVELENGTH |
Radiation Source |
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
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1 | FREE ELECTRON LASER | SLAC LCLS BEAMLINE CXI | 1.28 | SLAC LCLS | CXI |
Serial Crystallography
Sample delivery method |
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Diffraction ID | Description | Sample Delivery Method |
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1 | | injection |
Measurement |
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Diffraction ID | Pulse Duration | Pulse Repetition Rate | Focal Spot Size | Pulse Energy | Photons Per Pulse |
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1 | 40 (fs) | 120 | 1.7 | undefined (KeV) | |
Data Reduction |
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Diffraction ID | Frames Indexed | Crystal Hits | Frames Indexed | Latices Merged |
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1 | 7683 | | 7683 | |
Injection |
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Diffraction ID | Description | Flow Rate | Injector Diameter | Injection Power | Injector Nozzle | Filter Size | Carrier Solvent |
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1 | MESH | undefined (µl/min) | undefined (µm) | | | | |
Data Collection
Overall |
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | CC (Half) | R Split (All) | 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 |
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1 | 1.97 | 50 | 99.9 | 0.994 | 0.125 | 19.8 | 65.8 | | 14420 | | | |
Highest Resolution Shell |
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | CC (Half) | R Split (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) |
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1 | 1.97 | 2.01 | | | 0.178 | 0.616 | 2.8 | | |
Refinement
Statistics |
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | Mean Isotropic B |
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X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 6t14 | 2 | 14.838 | 14420 | 722 | 96.681 | 0.214 | 0.2116 | 0.21 | 0.2691 | 0.27 | 35.915 |
Temperature Factor Modeling |
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] |
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-0.001 | | | -0.001 | | 0.002 |
RMS Deviations |
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Key | Refinement Restraint Deviation |
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r_dihedral_angle_2_deg | 40.969 |
r_dihedral_angle_3_deg | 14.796 |
r_lrange_it | 7.035 |
r_dihedral_angle_1_deg | 6.117 |
r_dihedral_angle_4_deg | 5.481 |
r_scangle_it | 2.782 |
r_mcangle_it | 2.334 |
r_scbond_it | 1.75 |
r_mcbond_it | 1.451 |
r_angle_refined_deg | 0.815 |
RMS Deviations |
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Key | Refinement Restraint Deviation |
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r_dihedral_angle_2_deg | 40.969 |
r_dihedral_angle_3_deg | 14.796 |
r_lrange_it | 7.035 |
r_dihedral_angle_1_deg | 6.117 |
r_dihedral_angle_4_deg | 5.481 |
r_scangle_it | 2.782 |
r_mcangle_it | 2.334 |
r_scbond_it | 1.75 |
r_mcbond_it | 1.451 |
r_angle_refined_deg | 0.815 |
r_nbtor_refined | 0.297 |
r_nbd_refined | 0.207 |
r_symmetry_nbd_refined | 0.192 |
r_xyhbond_nbd_refined | 0.156 |
r_symmetry_xyhbond_nbd_refined | 0.135 |
r_chiral_restr | 0.04 |
r_bond_refined_d | 0.004 |
r_gen_planes_refined | 0.003 |
Non-Hydrogen Atoms Used in Refinement |
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Non-Hydrogen Atoms | Number |
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Protein Atoms | 1882 |
Nucleic Acid Atoms | |
Solvent Atoms | 276 |
Heterogen Atoms | 1 |
Software
Software |
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Software Name | Purpose |
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REFMAC | refinement |
DIALS | data reduction |
DIALS | data scaling |
PHASER | phasing |