Crystal structure of the calcium indicator GCaMP6s-BrUS-145 in calcium-bounded state
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 3EK4 | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 288 | 0.2M Sodium thiocyanate, pH 6.9, 20% PEG 3350 | |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.33 | 63.01 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 118.293 | α = 90 |
| b = 118.293 | β = 90 |
| c = 98.703 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 41 21 2 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 100 | PIXEL | RIGAKU HyPix-6000HE | 2022-11-16 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SEALED TUBE | RIGAKU PhotonJet-S | 1.542 | ||
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | 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 | 2.05 | 23.01 | 99.9 | 0.184 | 0.188 | 0.038 | 0.999 | 17.2 | 24.8 | 44474 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
| 1 | 2.05 | 2.11 | 100 | 1.736 | 1.788 | 0.425 | 0.83 | 17.4 | |||||||||||
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 | 2.05 | 23.01 | 41351 | 2167 | 97.87 | 0.21264 | 0.21057 | 0.2106 | 0.25065 | 0.2506 | RANDOM | 34.733 | |||||
| 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] | |
| 0.29 | 0.29 | -0.57 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_3_deg | 10.893 |
| r_long_range_B_refined | 8.535 |
| r_dihedral_angle_2_deg | 5.628 |
| r_dihedral_angle_1_deg | 5.452 |
| r_scbond_it | 5.243 |
| r_mcangle_it | 4.896 |
| r_mcbond_it | 3.572 |
| r_angle_refined_deg | 2.603 |
| r_chiral_restr | 0.174 |
| r_bond_refined_d | 0.016 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 3089 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 286 |
| Heterogen Atoms | 48 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| Aimless | data scaling |
| CrysalisPro | data reduction |
| MOLREP | phasing |
