2XB3
The Structure of Cyanobacterial PsbP
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 0.2M ZN ACETATE, 0.1M NA-CACODYLATE PH 6.5, 10% V/V 2-PROPANOL | |||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.76 | 55.5 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 64.946 | α = 90 |
| b = 64.946 | β = 90 |
| c = 81.806 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | P 32 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 | 100 | CCD | ADSC CCD | 2010-01-24 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | DIAMOND BEAMLINE I02 | Diamond | I02 | |
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 | 2.5 | 56.31 | 98.9 | 0.11 | 5.59 | 6.81 | 5133 | ||||||||||||
| 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 | 2.8 | 2.95 | 98.4 | 0.45 | 1.47 | 7.12 | |||||||||||||
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 | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | SAD | THROUGHOUT | NONE | 2.8 | 33.08 | 4899 | 232 | 98.3 | 0.194 | 0.192 | 0.238 | RANDOM | 30.68 | ||||||
| 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] | |
| 2.47 | 1.24 | 2.47 | -3.71 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 40.708 |
| r_dihedral_angle_4_deg | 20.761 |
| r_dihedral_angle_3_deg | 16.499 |
| r_dihedral_angle_1_deg | 8.719 |
| r_scangle_it | 3.356 |
| r_scbond_it | 1.898 |
| r_mcangle_it | 1.79 |
| r_angle_refined_deg | 1.618 |
| r_mcbond_it | 0.95 |
| r_angle_other_deg | 0.924 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 1204 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 20 |
| Heterogen Atoms | 5 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| MOSFLM | data reduction |
| SCALA | data scaling |
| PHENIX | phasing |
