Serial femtosecond crystallography structure of a photosynthetic reaction center
X-RAY DIFFRACTION
Serial Crystallography (SX)
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2WJN | PDB ENTRY 2WJN |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 8.1 | BATCH CRYSTALLIZATIONS WERE SET UP IN SEPTUM-SEALED GLASS VIALS CONTAINING 100 UL PROTEIN (30-35 MG/ML), 100 UL LIPIDIC SPONGE PHASE (12 % MONOOLEIN, 17.5 % JEFFAMINE M 600, 1.0 M HEPES PH 8.0, 0.7 M (NH4)2SO4, 2.5 % 1,2,3- HEPTANETRIOL) AND 100 UL 1.0-1.2 M TRI-SODIUM CITRATE | ||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.49 | 64.8 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 57.9 | α = 90 |
| b = 84.8 | β = 90 |
| c = 384.3 | 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 | 293 | PIXEL | CS-PAD CXI-1 | BE LENSES | 2011-02-19 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | FREE ELECTRON LASER | SLAC LCLS BEAMLINE CXI | 1.32 | SLAC LCLS | CXI |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | CC (Half) | R Split (All) | 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 | 1.48 | 50 | 99.1 | 0.54 | 0.365 | 3.5 | 27 | 23496 | 2 | ||||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | CC (Half) | R Split (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
| 1 | 3.5 | 3.59 | 99.6 | 0.32 | 0.527 | 2 | 26.6 | ||||||||||||
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 2WJN | 3.5 | 49.64 | 23496 | 1264 | 99.1 | 0.29639 | 0.29461 | 0.2958 | 0.32903 | 0.3251 | RANDOM | 57.177 | ||||
| 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] | |
| 1.92 | 0.84 | -2.76 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 31.427 |
| r_dihedral_angle_4_deg | 14.727 |
| r_dihedral_angle_3_deg | 12.713 |
| r_dihedral_angle_1_deg | 5.583 |
| r_long_range_B_refined | 4.559 |
| r_long_range_B_other | 4.558 |
| r_scangle_other | 2.14 |
| r_angle_refined_deg | 1.974 |
| r_mcangle_it | 1.571 |
| r_mcangle_other | 1.571 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 9076 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | 805 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| CrystFEL | data reduction |
| CrystFEL | data scaling |
| PHASER | phasing |














