CRYSTAL STRUCTURE ANALYSIS OF SER254 MUTANT OF ESCHERICHIA COLI THYMIDYLATE SYNTHASE
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 8.8 | 298 | 58% SATURATED AMMONIUM SULFATE, 20 MM 2-MERCAPTOETHANOL, 100 MM TRIS HCL, pH 8.8, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.14 | 60.77 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 132.437 | α = 90 |
| b = 132.437 | β = 90 |
| c = 132.437 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | I 21 3 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 138 | CCD | APS-1 | 1999-02-22 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | APS BEAMLINE 19-ID | APS | 19-ID | |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | 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 | 1.5 | 6 | 99.9 | 0.066 | 15.4 | 6.8 | 515931 | 515160 | 3 | 20.7 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
| 1 | 1.5 | 1.55 | 100 | 0.3 | 8.4 | ||||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (All) | 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) | Mean Isotropic B | ||||
| X-RAY DIFFRACTION | THROUGHOUT | 1.5 | 6 | 3 | 56424 | 56395 | 1713 | 92.9 | 0.224 | 0.224 | 0.22 | 0.238 | 0.24 | 24.8 | |||||
| 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 |
| c_dihedral_angle_d | 24 |
| c_scangle_it | 2.08 |
| c_mcangle_it | 1.55 |
| c_scbond_it | 1.51 |
| c_angle_deg | 1.5 |
| c_mcbond_it | 0.9 |
| c_improper_angle_d | 0.81 |
| c_bond_d | 0.005 |
| c_bond_d_na | |
| c_bond_d_prot | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2163 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 221 |
| Heterogen Atoms | 15 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| AMoRE | phasing |
| CNS | refinement |
| DENZO | data reduction |
| SCALEPACK | data scaling |
