6V2G
Complex of mutant (K162M) of E. coli L-asparaginase II with L-Asp. Covalent acyl-enzyme intermediate and tetrahedral intermediate.
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 5 | 293 | 0.17 M sodium-citrate pH 6 and 18% (w/v) PEG3350, 5 mM L-Asp |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.07 | 40.54 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 62.097 | α = 90 |
| b = 125.971 | β = 96.7 |
| c = 76.376 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 1 21 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 4M | Multilayer X-ray mirrors VariMax HF | 2019-04-05 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | ROTATING ANODE | RIGAKU MICROMAX-007 HF | 1.5418 | ||
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (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 | 1.9 | 40 | 97.4 | 0.044 | 0.053 | 0.029 | 13.7 | 3.2 | 90100 | ||||||||||
| 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 | 72.6 | 0.523 | 0.658 | 0.393 | 0.484 | 2.3 | |||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 3eca, monomer A | 1.9 | 24.93 | 85750 | 2673 | 96.5 | 0.151 | 0.149 | 0.207 | RANDOM | 32.28 | ||||||
| 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] | |
| -0.22 | 0.25 | 0.07 | 0.09 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 39.932 |
| r_dihedral_angle_1_deg | 17.762 |
| r_dihedral_angle_4_deg | 15.714 |
| r_dihedral_angle_3_deg | 15.136 |
| r_angle_refined_deg | 2.285 |
| r_angle_other_deg | 2.092 |
| r_chiral_restr | 0.118 |
| r_bond_refined_d | 0.019 |
| r_gen_planes_refined | 0.014 |
| r_gen_planes_other | 0.002 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 9804 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 1110 |
| Heterogen Atoms | |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| HKL-2000 | data reduction |
| HKL-2000 | data scaling |
| PDB_EXTRACT | data extraction |
| PHASER | phasing |
