Joint X-ray/neutron structure of aspastate aminotransferase (AAT) in complex with pyridoxamine 5'-phosphate (PMP)
X-RAY DIFFRACTION - NEUTRON DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 5VJZ | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | BATCH MODE | 7.5 | 277 | 40 mM NaOAc (pH 5.4), 2 mM PLP, 9% polyethylene glycol (PEG) 6000, and 10% glycerol. The crystal soaked with 50 mM Tris-HCl (pH 7.5), 5% PEG 6000, 5% glycerol, and 300 mM L-cysteinesulfinate in D2O for 24 h |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.45 | 49.73 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 55.71 | α = 90 |
| b = 125.03 | β = 90 |
| c = 130.9 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 21 21 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 293 | PIXEL | DECTRIS PILATUS 12M | MIRRORS | 2018-11-15 | M | SINGLE WAVELENGTH | |||||
| 2 | 1 | neutron | 293 | IMAGE PLATE | MAATEL IMAGINE | COLLIMATORS | 2018-10-04 | L | LAUE | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | ESRF BEAMLINE BM30A | 1.0 | ESRF | BM30A |
| 2 | NUCLEAR REACTOR | ILL BEAMLINE LADI III | 3.10-4.15 | ILL | LADI III |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym I (Observed) | Rrim I (All) | Rpim I (All) | 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 | |||
| 1 | 1.7 | 47.3 | 95.3 | 0.039 | 18.3 | 3 | 96556 | ||||||||||||
| 2 | 2.2 | 55.21 | 75 | 0.161 | 7.5 | 5.4 | 33902 | ||||||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | R Merge I (Observed) | R-Sym I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | R Split (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||
| 1 | 1.7 | 1.76 | 0.37 | 3.3 | 2.2 | ||||||||||||||
| 2 | 2.2 | 2.32 | 0.308 | 4.4 | 4.3 | ||||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Cut-off Sigma (I) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | 1.7 | 39.71 | 2.5 | 101278 | 85754 | 4298 | 86.4 | 0.203 | 0.1909 | 0.233 | 0.2166 | 29.37 | ||||||
| NEUTRON DIFFRACTION | MOLECULAR REPLACEMENT | 2.22 | 39.71 | 2.5 | 46015 | 31861 | 1532 | 67.4 | 0.237 | 0.265 | 29.37 | ||||||||
| 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] | |
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| x_torsion_deg | 25.9 |
| x_torsion_deg | 25.9 |
| x_angle_deg | 1 |
| x_angle_deg | 1 |
| x_torsion_impr_deg | 0.77 |
| x_torsion_impr_deg | 0.77 |
| x_bond_d | 0.01 |
| x_bond_d | 0.01 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 6560 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 376 |
| Heterogen Atoms | 41 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| nCNS | refinement |
| XDS | data scaling |
| XDS | data reduction |
| PHASER | phasing |
| LAUEGEN | data reduction |
| LSCALE | data scaling |
| nCNS | phasing |














