Uridine Phosphorylase from Salmonella typhimurium. Crystal Structure at 2.9 A Resolution
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details | 
| experimental model | PDB | 1K3F | PDB entry 1K3F | 
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details | 
| 1 | VAPOR DIFFUSION, HANGING DROP | 4.6 | 294 | 0.1M Na Acetate trihydrate, 10% PEG 8000, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 294K | 
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content | 
| 2.02 | 38.98 | 
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) | 
| a = 92.26 | α = 90 | 
| b = 92.26 | β = 90 | 
| c = 267.46 | γ = 120 | 
| Symmetry | |
|---|---|
| Space Group | P 61 | 
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 110 | IMAGE PLATE | MARRESEARCH | Capillary optics | 2003-08-15 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline | 
| 1 | ROTATING ANODE | OTHER | 1.54179 | ||
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym 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 | 30 | 93 | 0.154 | 0.177 | 6.89 | 2.84 | 75053 | 26462 | -0.2 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
| 1 | 2.9 | 2.95 | 75.9 | 0.338 | 0.333 | 3.05 | 2.79 | 1074 | |||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work (Depositor) | R-Free (Depositor) | R-Free Selection Details | Mean Isotropic B | ||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB entry 1K3F | 2.9 | 29.46 | 2 | 26462 | 1327 | 93.9 | 0.216 | 0.212 | 0.212 | 0.284 | RANDOM | 18.5 | ||||
| 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 | 23.4 | 
| c_scangle_it | 13.92 | 
| c_mcangle_it | 11.79 | 
| c_scbond_it | 10.41 | 
| c_mcbond_it | 7.94 | 
| c_angle_deg | 1.5 | 
| c_improper_angle_d | 0.91 | 
| c_bond_d | 0.008 | 
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number | 
| Protein Atoms | 11262 | 
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | 8 | 
Software
| Software | |
|---|---|
| Software Name | Purpose | 
| CNS | refinement | 
| MAR345 | data collection | 
| XDS | data scaling | 
| MOLREP | phasing | 














