4JQ6
Crystal structure of blue light-absorbing proteorhodopsin from Med12 at 2.3 Angstrom
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 4KLY | proteorhodopsin mutant D97N from HOT75 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION | 4.5 | Crystals were grown using the bicelle method. The crystallization buffer was 32% v/v (+/-)-2-methyl-2,4-pentanediol, 100 mM sodium acetate pH 4.5 and 20 mM calcium chloride, VAPOR DIFFUSION |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.18 | 43.49 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 87.267 | α = 90 |
b = 101.952 | β = 119.52 |
c = 87.357 | γ = 90 |
Symmetry | |
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Space Group | I 1 2 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SLS BEAMLINE X06SA | 0.979 | SLS | X06SA |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 2.3 | 38.01 | 98.3 | 0.092 | 11.3 | 5 | 28615 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 2.3 | 2.43 | 90.1 | 0.717 | 1.9 | 4 | 3562 |
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 | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | proteorhodopsin mutant D97N from HOT75 | 2.31 | 21.16 | 27109 | 1454 | 98.08 | 0.21087 | 0.20795 | 0.26596 | RANDOM | 46.863 |
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] | |
-0.04 | -0.02 | 0.06 | -0.04 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 40.057 |
r_dihedral_angle_3_deg | 16.249 |
r_dihedral_angle_4_deg | 13.303 |
r_dihedral_angle_1_deg | 4.904 |
r_angle_refined_deg | 1.482 |
r_chiral_restr | 0.172 |
r_bond_refined_d | 0.008 |
r_gen_planes_refined | 0.004 |
r_bond_other_d | |
r_angle_other_deg |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4816 |
Nucleic Acid Atoms | |
Solvent Atoms | 42 |
Heterogen Atoms | 81 |
Software
Software | |
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Software Name | Purpose |
PHASER | phasing |
REFMAC | refinement |
XDS | data reduction |
XDS | data scaling |