3LR8
Self-assembly of spider silk proteins is controlled by a pH-sensitive relay
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION | Ammonium sulphate, PEG 400, VAPOR DIFFUSION |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.04 | 59.5 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 91.193 | α = 90 |
b = 91.193 | β = 90 |
c = 143.546 | γ = 120 |
Symmetry | |
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Space Group | P 61 2 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 | CCD | ADSC QUANTUM 315 | M | SINGLE WAVELENGTH | ||||||||
2 | 1 |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID23-1 | ESRF | ID23-1 | |
2 | SYNCHROTRON | ESRF BEAMLINE ID14-4 | ESRF | ID14-4 |
Data Collection
Overall | |||||||||||||||||||
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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 | 2.3 | 79.06 | 0.144 | 2 | 11.4 | 15139 | 2.2 |
Highest Resolution Shell | |||||||||||||||||||
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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) | |||||||||||
2.3 | 2.36 | 0.341 | 7.8 | 11.9 | 2315 |
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 (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | NT wild-type | 2.3 | 53.1 | 15139 | 808 | 97.72 | 0.19436 | 0.19156 | 0.24654 | RANDOM | 8.444 |
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] | |
0.59 | 0.3 | 0.59 | -0.89 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 39.552 |
r_dihedral_angle_3_deg | 14.79 |
r_dihedral_angle_4_deg | 14.671 |
r_dihedral_angle_1_deg | 10.141 |
r_scangle_it | 3.267 |
r_scbond_it | 2.372 |
r_angle_refined_deg | 1.487 |
r_mcangle_it | 1.079 |
r_mcbond_it | 0.99 |
r_nbtor_refined | 0.29 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1850 |
Nucleic Acid Atoms | |
Solvent Atoms | 97 |
Heterogen Atoms | 50 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |