Thermostable omega transaminase PjTA-R6 variant W58M/F86L/R417L engineered for asymmetric synthesis of enantiopure bulky amines
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 7.6 | 293 | Drop were prepared by mixing 1ul of protein solution (~10 mg/ml in 20 mM HEPES pH 7.5, 100 mM NaCl, and 20 uM PLP buffer ) with 1ul of reservoir solution. The reservoir contained 0.7-1M Succinic acid pH 7.6. Crystals formed after 48h. |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.8 | 56.15 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 97.822 | α = 90 |
| b = 97.822 | β = 90 |
| c = 118.716 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 43 |
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 EIGER2 XE 16M | 2019-07-18 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | DIAMOND BEAMLINE I04 | 0.9795 | Diamond | I04 |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim 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 | 1.9 | 50.8 | 100 | 0.054 | 0.06 | 0.027 | 0.999 | 15.1 | 4.9 | 87797 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
| 1 | 1.9 | 1.93 | 100 | 0.737 | 0.826 | 0.368 | 0.7 | 4.9 | |||||||||||
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 (Observed) | R-Work (Depositor) | R-Free (Depositor) | R-Free Selection Details | Mean Isotropic B | |||||||
| X-RAY DIFFRACTION | FOURIER SYNTHESIS | FREE R-VALUE | 1.9 | 50.8 | 83494 | 4254 | 99.99 | 0.1792 | 0.1778 | 0.2076 | RANDOM | 33.469 | |||||||
| 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] | |
| 0.07 | 0.07 | -0.13 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 34.799 |
| r_dihedral_angle_4_deg | 14.957 |
| r_dihedral_angle_3_deg | 12.902 |
| r_dihedral_angle_1_deg | 6.899 |
| r_angle_refined_deg | 1.458 |
| r_angle_other_deg | 1.399 |
| r_chiral_restr | 0.075 |
| r_bond_refined_d | 0.008 |
| r_gen_planes_refined | 0.007 |
| r_bond_other_d | 0.001 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 6901 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 398 |
| Heterogen Atoms | 40 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| Aimless | data scaling |
| REFMAC | refinement |
| PDB_EXTRACT | data extraction |
| DIALS | data processing |
| Coot | model building |
| REFMAC | phasing |
| xia2 | data processing |














