XFEL crystal structure of human melatonin receptor MT2 in complex with ramelteon
Serial Crystallography (SX)
Starting Model(s)
| Initial Refinement Model(s) |
|---|
| Type | Source | Accession Code | Details |
|---|
|
experimental model | PDB | 1IRO | PDB id:1IRO |
Crystallization
| Crystalization Experiments |
|---|
| ID | Method | pH | Temperature | Details |
|---|
| 1 | LIPIDIC CUBIC PHASE | | 293 | N-(2-Acetamido)iminodiacetic acid, PEG 400, ammonium acetate |
| Crystal Properties |
|---|
| Matthews coefficient | Solvent content |
|---|
| 3.64 | 66.19 |
Crystal Data
| Unit Cell |
|---|
| Length ( Å ) | Angle ( ˚ ) |
|---|
| a = 69.4 | α = 90 |
| b = 145.7 | β = 106.2 |
| c = 77.2 | γ = 90 |
| Symmetry |
|---|
| Space Group | P 1 21 1 |
|---|
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 | | 2017-12-07 | M | SINGLE WAVELENGTH |
| Radiation Source |
|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
|---|
| 1 | FREE ELECTRON LASER | SLAC LCLS BEAMLINE CXI | 1.30 | SLAC LCLS | CXI |
Serial Crystallography
| Sample delivery method |
|---|
| Diffraction ID | Description | Sample Delivery Method |
|---|
| 1 | | injection |
| Measurement |
|---|
| Diffraction ID | Pulse Duration | Pulse Repetition Rate | Focal Spot Size | Pulse Energy | Photons Per Pulse |
|---|
| 1 | 30 (fs) | 120 | | 9.83 (KeV) | |
| Data Reduction |
|---|
| Diffraction ID | Frames Indexed | Crystal Hits | Frames Indexed | Latices Merged |
|---|
| 1 | 28834 | 60005 | 28834 | |
| Injection |
|---|
| Diffraction ID | Description | Flow Rate | Injector Diameter | Injection Power | Injector Nozzle | Filter Size | Carrier Solvent |
|---|
| 1 | | 0.357 (µl/min) | undefined (µm) | HPLC pump | LCP | | LCP |
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 | 3.3 | 22 | 100 | 3.67 | 221.1 | | 22143 | | | 79.55 |
| Highest Resolution Shell |
|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Split (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) |
|---|
| 1 | 3.3 | 3.46 | 100 | | 0.2 | | 84.6 | |
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 id:1IRO | 3.3 | 22 | 22122 | 1108 | 100 | 0.249 | 0.248 | 0.29 | 0.27 | 0.32 | RANDOM | 136.26 |
| 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] |
|---|
| -39.6645 | | -24.7703 | 35.1785 | | 4.486 |
| RMS Deviations |
|---|
| Key | Refinement Restraint Deviation |
|---|
| t_other_torsion | 2.71 |
| t_omega_torsion | 2.03 |
| t_angle_deg | 0.95 |
| t_bond_d | 0.009 |
| t_dihedral_angle_d | |
| t_incorr_chiral_ct | |
| t_pseud_angle | |
| t_trig_c_planes | |
| t_gen_planes | |
| t_it | |
| RMS Deviations |
|---|
| Key | Refinement Restraint Deviation |
|---|
| t_other_torsion | 2.71 |
| t_omega_torsion | 2.03 |
| t_angle_deg | 0.95 |
| t_bond_d | 0.009 |
| t_dihedral_angle_d | |
| t_incorr_chiral_ct | |
| t_pseud_angle | |
| t_trig_c_planes | |
| t_gen_planes | |
| t_it | |
| t_nbd | |
| t_improper_torsion | |
| t_chiral_improper_torsion | |
| t_sum_occupancies | |
| t_utility_distance | |
| t_utility_angle | |
| t_utility_torsion | |
| t_ideal_dist_contact | |
| Non-Hydrogen Atoms Used in Refinement |
|---|
| Non-Hydrogen Atoms | Number |
|---|
| Protein Atoms | 5965 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | 39 |
Software
| Software |
|---|
| Software Name | Purpose |
|---|
| BUSTER | refinement |
| CrystFEL | data reduction |
| CrystFEL | data scaling |
| PHASER | phasing |