Crystal Structure of 5'-Deoxy-5'-methylthioadenosine phosphorylase from Aeropyrum pernix 343K
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 1WTA | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | COUNTER-DIFFUSION | 5.4 | 293.2 | The mixture of protein solution and agarose was filled into a glass capillary, and the capillary was immersed in the reservoir solution for crystallization. The composition of the reservoir solution was as follows.15%(v/v)PEG#200,0.1 M phosphate citrate pH 5.4 |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.28176999 | 46.1279678 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 79.044 | α = 90 |
| b = 79.044 | β = 90 |
| c = 233.312 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | H 3 2 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 343 | PIXEL | DECTRIS EIGER X 16M | 2024-11-24 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | PHOTON FACTORY BEAMLINE BL-17A | 0.98 | Photon Factory | BL-17A |
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 | 1.7 | 44.4 | 100 | 0.095 | 0.105 | 0.046 | 0.999 | 20.8 | 10 | 31368 | |||||||||
| 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 | 1.7 | 1.73 | 100 | 1.179 | 1.288 | 0.572 | 0.676 | 2.5 | 9.8 | ||||||||||
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 (All) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | Mean Isotropic B | |||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 1WTA | 1.7 | 44.4 | 31367 | 1611 | 99.971 | 0.147 | 0.1452 | 0.1572 | 0.1819 | 0.1886 | 27.831 | |||||
| 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] | |
| 0.141 | 0.07 | 0.141 | -0.456 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_6_deg | 15.221 |
| r_dihedral_angle_3_deg | 13.949 |
| r_lrange_other | 10.346 |
| r_lrange_it | 10.343 |
| r_scangle_it | 8.237 |
| r_scangle_other | 8.234 |
| r_dihedral_angle_1_deg | 7.342 |
| r_dihedral_angle_2_deg | 6.727 |
| r_scbond_it | 5.161 |
| r_scbond_other | 5.161 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2142 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 45 |
| Heterogen Atoms | 22 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| Coot | model building |
| MOLREP | phasing |
| Aimless | data scaling |
| XDS | data reduction |














