Femtosecond Structural Dynamics Drives the Trans/Cis Isomerization in Photoactive Yellow Protein: 800 fs to 1200 fs Structure
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | LIQUID DIFFUSION | 295 | Combine and vortex 4.45M sodium malonate with 100 uL protein (135 mg/ml initial concentration) for a final sodium malonate concentration of 3.2M. Let stand at room temperature for 1 hour. Spin at 10,000g for 2 hours in small spin concentrators. Vortex and let stand at room temperature for 4 hours. Harvest crystals and rebuffer with 3.0M sodium malonate. | |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 1.88 | 34.5 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 66.9 | α = 90 |
| b = 66.9 | β = 90 |
| c = 40.8 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | P 63 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 295 | PIXEL | CS-PAD CXI-1 | 2015-03-21 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | FREE ELECTRON LASER | SLAC LCLS BEAMLINE CXI | 1.31 | SLAC LCLS | CXI |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 1.6 | 19.31 | 98.79 | 10 | 470 | 13046 | 13046 | ||||||||||||
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 | THROUGHOUT | 1.6 | 19.31 | 13046 | 658 | 98.79 | 0.21024 | 0.2076 | 0.2 | 0.2648 | 0.26 | RANDOM | 5.206 | ||||||
| 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] | |
| -0.02 | -0.01 | -0.02 | 0.06 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 42.721 |
| r_dihedral_angle_3_deg | 18.773 |
| r_dihedral_angle_4_deg | 15.579 |
| r_dihedral_angle_1_deg | 8.478 |
| r_angle_other_deg | 2.535 |
| r_angle_refined_deg | 2.344 |
| r_long_range_B_refined | 1.662 |
| r_long_range_B_other | 1.386 |
| r_mcangle_it | 0.53 |
| r_mcangle_other | 0.529 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 987 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 92 |
| Heterogen Atoms | |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| CrystFEL | data reduction |
| CrystFEL | data scaling |
