8T89
Racemic mixture of amyloid beta segment 16-KLVFFA-21 forms heterochiral rippled beta-sheet
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | BATCH MODE | 298 | hexafluoroisopropanol, water |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.63 | 24.76 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 11.69 | α = 89.955 |
b = 11.7 | β = 91.778 |
c = 18.51 | γ = 110.506 |
Symmetry | |
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Space Group | P -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 | PIXEL | DECTRIS EIGER X 16M | 2023-03-31 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 24-ID-E | 0.97918 | APS | 24-ID-E |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | CC (Half) | 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 | 1.5 | 18.5 | 97 | 0.157 | 0.172 | 0.997 | 4.49 | 6 | 1426 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
1 | 1.5 | 1.56 | 1.159 | 1.265 | 0.767 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Work | R-Free | Mean Isotropic B | ||||||||
X-RAY DIFFRACTION | AB INITIO PHASING | FREE R-VALUE | 1.5 | 18.5 | 1426 | 143 | 97.007 | 0.225 | 0.2252 | 0.227 | 24.81 |
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] | |
-0.834 | 1.272 | 0.288 | 1.116 | -0.319 | -1.546 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_3_deg | 16.043 |
r_dihedral_angle_6_deg | 14.756 |
r_lrange_it | 8.269 |
r_lrange_other | 8.037 |
r_scangle_it | 6.718 |
r_scangle_other | 5.827 |
r_dihedral_angle_1_deg | 5.502 |
r_scbond_it | 4.535 |
r_scbond_other | 3.911 |
r_mcangle_other | 3.385 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 52 |
Nucleic Acid Atoms | |
Solvent Atoms | 2 |
Heterogen Atoms | 7 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XSCALE | data scaling |
XDS | data reduction |
SHELXT | phasing |