XFEL structure of the off state of a reversibly photoswitching fluorescent protein determined using the GDVN injection method
Serial Crystallography (SX)  
Crystallization
| Crystalization Experiments | 
|---|
| ID | Method | pH | Temperature | Details | 
|---|
| 1 | BATCH MODE |  | 293 | 0.2 M lithium sulfate, 
0.1 M Tris-Cl pH 8.5, 
23-30% PEG 3350 | 
| Crystal Properties | 
|---|
| Matthews coefficient | Solvent content | 
|---|
| 2.31 | 46.83 | 
Crystal Data
| Unit Cell | 
|---|
| Length ( Å ) | Angle ( ˚ ) | 
|---|
| a = 39.8 | α = 90 | 
| b = 74.6 | β = 90 | 
| c = 79.2 | 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 XPP |  | 2016-06-17 | M | SINGLE WAVELENGTH | 
| Radiation Source | 
|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline | 
|---|
| 1 | FREE ELECTRON LASER | SLAC LCLS BEAMLINE XPP | 1.308 | SLAC LCLS | XPP | 
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 | 1.53 | 54.3 | 78.3 | 5.96 | 7.2 |  | 36135 |  |  |  | 
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 | MOLECULAR REPLACEMENT | THROUGHOUT | 1.53 | 54.3 | 25878 | 1343 | 75.33 | 0.17904 | 0.1764 | 0.18 | 0.22831 | 0.23 | RANDOM | 42.455 | 
| 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] | 
|---|
| 1.09 |  |  | -0.57 |  | -0.52 | 
| RMS Deviations | 
|---|
| Key | Refinement Restraint Deviation | 
|---|
| r_dihedral_angle_2_deg | 33.208 | 
| r_dihedral_angle_4_deg | 21.757 | 
| r_long_range_B_refined | 19.626 | 
| r_dihedral_angle_3_deg | 16.164 | 
| r_dihedral_angle_1_deg | 6.72 | 
| r_scbond_it | 4.897 | 
| r_mcangle_it | 3.7 | 
| r_mcbond_it | 2.978 | 
| r_angle_refined_deg | 1.999 | 
| r_chiral_restr | 0.138 | 
| RMS Deviations | 
|---|
| Key | Refinement Restraint Deviation | 
|---|
| r_dihedral_angle_2_deg | 33.208 | 
| r_dihedral_angle_4_deg | 21.757 | 
| r_long_range_B_refined | 19.626 | 
| r_dihedral_angle_3_deg | 16.164 | 
| r_dihedral_angle_1_deg | 6.72 | 
| r_scbond_it | 4.897 | 
| r_mcangle_it | 3.7 | 
| r_mcbond_it | 2.978 | 
| r_angle_refined_deg | 1.999 | 
| r_chiral_restr | 0.138 | 
| r_bond_refined_d | 0.018 | 
| r_gen_planes_refined | 0.01 | 
| r_bond_other_d |  | 
| r_angle_other_deg |  | 
| r_gen_planes_other |  | 
| r_nbd_refined |  | 
| r_nbd_other |  | 
| r_nbtor_refined |  | 
| r_nbtor_other |  | 
| r_xyhbond_nbd_refined |  | 
| r_xyhbond_nbd_other |  | 
| r_metal_ion_refined |  | 
| r_metal_ion_other |  | 
| r_symmetry_vdw_refined |  | 
| r_symmetry_vdw_other |  | 
| r_symmetry_hbond_refined |  | 
| r_symmetry_hbond_other |  | 
| r_symmetry_metal_ion_refined |  | 
| r_symmetry_metal_ion_other |  | 
| r_mcbond_other |  | 
| r_mcangle_other |  | 
| r_scbond_other |  | 
| r_scangle_it |  | 
| r_scangle_other |  | 
| r_long_range_B_other |  | 
| r_rigid_bond_restr |  | 
| r_sphericity_free |  | 
| r_sphericity_bonded |  | 
| Non-Hydrogen Atoms Used in Refinement | 
|---|
| Non-Hydrogen Atoms | Number | 
|---|
| Protein Atoms | 1739 | 
| Nucleic Acid Atoms |  | 
| Solvent Atoms | 224 | 
| Heterogen Atoms |  | 
Software
| Software | 
|---|
| Software Name | Purpose | 
|---|
| REFMAC | refinement | 
| MOSFLM | data reduction | 
| SCALA | data scaling | 
| MOLREP | phasing |