Crystal Structure of Plasmodium Falciparum Spermidine Synthase in Complex with DECARBOXYLATED S-ADENOSYLMETHIONINE5' AND 4- METHYLANILINE
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2I7C | PDB ENTRY 2I7C |
Crystallization
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.31 | 62.87 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 195.46 | α = 90 |
| b = 132.79 | β = 94.86 |
| c = 49.158 | 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 | 110 | CCD | MARRESEARCH 165 MM | MULTILAYER MIRROR | 2013-06-27 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | MAX II BEAMLINE I911-2 | MAX II | I911-2 | |
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 | 1.76 | 28.65 | 93.7 | 0.05 | 15.42 | 3.05 | 118398 | 1 | |||||||||||
| 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 | 1.76 | 1.86 | 78.5 | 0.39 | 2.39 | 2.65 | |||||||||||||
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 (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 | PDB ENTRY 2I7C | 1.75 | 28.66 | 111410 | 5852 | 94.11 | 0.1812 | 0.17958 | 0.19 | 0.21232 | 0.22 | RANDOM | 23.628 | ||||
| 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] | |
| -0.01 | 0.04 | -0.07 | 0.08 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 39.377 |
| r_dihedral_angle_4_deg | 19.587 |
| r_dihedral_angle_3_deg | 14.239 |
| r_dihedral_angle_1_deg | 6.82 |
| r_angle_refined_deg | 2.279 |
| r_angle_other_deg | 0.985 |
| r_chiral_restr | 0.148 |
| r_bond_refined_d | 0.024 |
| r_gen_planes_refined | 0.012 |
| r_bond_other_d | 0.001 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 6739 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 391 |
| Heterogen Atoms | 136 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| XDS | data reduction |
| SCALEPACK | data scaling |
| MOLREP | phasing |
