Malarial EBA-175 region VI crystallographic structure reveals a KIX-like binding interface
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 4.5 | 291 | 0.1M citric acid, 1M LiCl, 25-30% PEG 6K, pH4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.17 | 43.25 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 50.237 | α = 90 |
| b = 65.591 | β = 90 |
| c = 105.352 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | C 2 2 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 | MARMOSAIC 225 mm CCD | mirrors | 2007-05-23 | M | SINGLE WAVELENGTH | |||||
| 2 | 1 | x-ray | 100 | IMAGE PLATE | RIGAKU RAXIS IV++ | mirrors | 2007-05-23 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SRS BEAMLINE PX10.1 | 0.977 | SRS | PX10.1 |
| 2 | ROTATING ANODE | RIGAKU MICROMAX-007 HF | 1.54 | ||
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 | 1.8 | 30 | 99.3 | 0.04 | 25.3 | 3.6 | 16406 | 33 | |||||||||||
| 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) | |||||||||||
| 1.8 | 1.88 | 99.7 | 0.357 | 3.7 | 3.6 | 2030 | |||||||||||||
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 | SAD | THROUGHOUT | 1.8 | 27.84 | 15553 | 834 | 99.33 | 0.21003 | 0.20832 | 0.21 | 0.24114 | 0.24 | RANDOM | 33.62 | |||||
| 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] | |
| 0.42 | -0.26 | -0.17 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 33.605 |
| r_dihedral_angle_4_deg | 18.318 |
| r_dihedral_angle_3_deg | 14.878 |
| r_dihedral_angle_1_deg | 5.158 |
| r_scangle_it | 5.15 |
| r_scbond_it | 3.568 |
| r_mcangle_it | 2.649 |
| r_mcbond_it | 1.72 |
| r_angle_refined_deg | 1.247 |
| r_nbtor_refined | 0.303 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 1308 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 75 |
| Heterogen Atoms | 1 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| HKL-2000 | data collection |
| DENZO | data reduction |
| SCALEPACK | data scaling |
| SHELXS | phasing |














