Double mutant (A16V+S108T) Plasmodium falciparum DHFR-TS (T9/94) complexed with cycloguanil, NADPH and dUMP
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | MICROBATCH | 4.6 | 297 | 0.1mM sodium acetate, 25% (w/v) PEG 4000, 0.2M ammonium acetate, pH 4.6, microbatch, temperature 297K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.53 | 51.39 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 56.696 | α = 90 |
| b = 155.549 | β = 90 |
| c = 164.962 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 21 21 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 100 | CCD | 2010-09-17 | M | SINGLE WAVELENGTH | |||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | ROTATING ANODE | ENRAF-NONIUS FR591 | 1.5418 | ||
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 | 2.65 | 30 | 99.9 | 0.079 | 23.6 | 8.1 | 43621 | ||||||||||||
| 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 | 2.65 | 2.74 | 99.7 | 0.355 | 3.6 | 4266 | |||||||||||||
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 (DCC) | R-Free Selection Details | Mean Isotropic B | |||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 2.65 | 29.11 | 43280 | 2174 | 99.9 | 0.203 | 0.203 | 0.2 | 0.257 | 0.2 | RANDOM | 48.5 | |||||
| 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] | |
| 9.72 | -0.42 | -9.3 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| c_dihedral_angle_d | 22.9 |
| c_scangle_it | 2.62 |
| c_mcangle_it | 2.35 |
| c_scbond_it | 1.76 |
| c_angle_deg | 1.4 |
| c_mcbond_it | 1.36 |
| c_improper_angle_d | 0.79 |
| c_bond_d | 0.007 |
| c_bond_d_na | |
| c_bond_d_prot | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 9046 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 371 |
| Heterogen Atoms | 170 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| SCALEPACK | data scaling |
| AMoRE | phasing |
| CNS | refinement |
| PDB_EXTRACT | data extraction |
| DENZO | data reduction |
