2.9 A CRYSTAL STRUCTURE OF LIGAND-FREE TRYPTOPHANYL-TRNA SYNTHETASE: DOMAIN MOVEMENTS FRAGMENT THE ADENINE NUCLEOTIDE BINDING SITE.
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | MICRODIALYSIS | 6.8 | 315 | 2.0 M K2HPO4 , pH 6.8, MICRODIALYSIS, temperature 315K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.72 | 54.76 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 226.76 | α = 90 |
| b = 91.66 | β = 132.66 |
| c = 156.97 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | C 1 2 1 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | M | SINGLE WAVELENGTH | ||||||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | ROTATING ANODE | RIGAKU RU200 | |||
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 | 2.9 | 18 | 0.091 | 1.8 | 38244 | 45.6 | |||||||||||||
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 Selection Details | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | THROUGHOUT | 2.9 | 10 | 38244 | 1929 | 74.3 | 0.237 | 0.237 | 0.22 | 0.262 | RANDOM | 49.6 | |||||||
| 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] | |
| 9.88 | 14.23 | -7.04 | -2.83 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| c_dihedral_angle_d | 21.7 |
| c_scangle_it | 4.57 |
| c_mcangle_it | 3.65 |
| c_scbond_it | 2.77 |
| c_mcbond_it | 2.1 |
| c_angle_deg | 1.2 |
| c_improper_angle_d | 0.84 |
| c_bond_d | 0.009 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 15480 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| RSREF | model building |
| MICE | model building |
| CNS | refinement |
| DENZO | data reduction |
| RSREF | phasing |
| MICE | phasing |














