8T84
Racemic mixture of amyloid beta segment 35-MVGGVV-40 forms heterochiral rippled beta-sheet, includes hexafluoroisopropanol
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | BATCH MODE | 298 | hexafluoroisopropanol, water | |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 1.97 | 37.57 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 9.42 | α = 96.565 |
| b = 11.22 | β = 89.572 |
| c = 21.12 | γ = 94.951 |
| Symmetry | |
|---|---|
| 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 | 2022-10-18 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | APS BEAMLINE 24-ID-E | 0.979180 | 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 | 1.1 | 20.981 | 85.8 | 0.174 | 0.186 | 0.995 | 4.88 | 6.5 | 2980 | ||||||||||
| 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 | 1.1 | 1.16 | 1.897 | 2.09 | 0.627 | ||||||||||||||
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 | 1.101 | 20.981 | 2980 | 298 | 85.78 | 0.19 | 0.1889 | 0.2038 | 21.652 | ||||||||
| 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] | |
| -2.602 | 0.529 | -0.52 | 3.713 | 0.969 | -1.442 | |
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_rigid_bond_restr | 10.582 |
| r_dihedral_angle_3_deg | 7.704 |
| r_lrange_other | 7.365 |
| r_lrange_it | 6.932 |
| r_scangle_other | 6.4 |
| r_scangle_it | 6.302 |
| r_dihedral_angle_1_deg | 5.671 |
| r_scbond_other | 5.532 |
| r_scbond_it | 5.289 |
| r_angle_refined_deg | 1.928 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 38 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 2 |
| Heterogen Atoms | 20 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| XSCALE | data scaling |
| XDS | data reduction |
| SHELXD | phasing |
