Crystal structure of methionine gamma-lyase from Brevibacterium aurantiacum having disordered N-terminus and devoid of PLP cofactor
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 1PG8 | Crystal Structure of L-methionine alpha-, gamma-lyase |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 294 | Well solution: 0.1 M MES pH 6.5, 0.6 M NaCl, 18% PEG4000, PLP 2 mM, Cryoprotection in glycerol 25% |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.22 | 41.44 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 165.848 | α = 90 |
| b = 165.848 | β = 90 |
| c = 209.263 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 41 21 2 |
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 | Kirkpatrick-Baez pair of bi-morph mirrors | 2018-07-06 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SOLEIL BEAMLINE PROXIMA 1 | 0.97857 | SOLEIL | PROXIMA 1 |
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 | 3.237 | 129.978 | 95.7 | 0.1532 | 0.1572 | 0.0351 | 0.999 | 13.06 | 20.01 | 30990 | |||||||||
| 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) | ||||||||
| 3.237 | 3.628 | 77.3 | 1.9151 | 1.9621 | 0.4233 | 0.742 | 1.9 | 21.21 | 1549 | ||||||||||
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-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | |||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 3.238 | 32.76 | 30928 | 1518 | 65.8 | 0.2487 | 0.2469 | 0.2432 | 0.2843 | 0.2745 | RANDOM | 163.93 | |||||
| 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] | |
| 0.6572 | 0.6572 | -1.3144 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| t_other_torsion | 21.03 |
| t_omega_torsion | 1.87 |
| t_angle_deg | 0.79 |
| t_bond_d | 0.006 |
| t_dihedral_angle_d | |
| t_gen_planes | |
| t_it | |
| t_chiral_improper_torsion | |
| t_ideal_dist_contact | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 18176 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| autoPROC | data processing |
| XDS | data reduction |
| Aimless | data scaling |
| STARANISO | data scaling |
| BUSTER | refinement |
| Coot | model building |
| PHASER | phasing |














