2BJ0
Crystal Structure of AChBP from Bulinus truncatus revals the conserved structural scaffold and sites of variation in nicotinic acetylcholine receptors
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1I9B | PDB ENTRY 1I9B |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 10.5 | 0.1 M CAPS PH10.5, 0.2 M LITHIUMSULFATE, 2 M AMMONIUM SULFATE, pH 10.50 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.9 | 57.7 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 76.945 | α = 90 |
b = 219.018 | β = 90 |
c = 166.965 | γ = 90 |
Symmetry | |
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Space Group | C 2 2 21 |
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 | CCD | ADSC CCD | 2003-03-19 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID14-4 | ESRF | ID14-4 |
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 | 44.72 | 98 | 0.13 | 12 | 5.1 | 93560 | 1.7 |
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 | 2.07 | 89 | 0.77 | 1.7 | 3.4 |
Refinement
Statistics | |||||||||||||||||||
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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 | PDB ENTRY 1I9B | 2 | 12 | 88439 | 4645 | 97.7 | 0.212 | 0.21 | 0.249 | RANDOM | 34.23 |
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] | |
3.91 | -2.11 | -1.8 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.107 |
r_dihedral_angle_4_deg | 25.374 |
r_dihedral_angle_3_deg | 15.954 |
r_dihedral_angle_1_deg | 7.008 |
r_scangle_it | 3.961 |
r_scbond_it | 2.478 |
r_mcangle_it | 1.846 |
r_angle_refined_deg | 1.523 |
r_mcbond_it | 1.112 |
r_symmetry_vdw_refined | 0.238 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 8050 |
Nucleic Acid Atoms | |
Solvent Atoms | 424 |
Heterogen Atoms | 56 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
MOSFLM | data reduction |
SCALEPACK | data scaling |
AMoRE | phasing |