1CT1
CHOLERA TOXIN B-PENTAMER MUTANT G33R BOUND TO RECEPTOR PENTASACCHARIDE
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1CHP | PDB ENTRY 1CHP |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | PROTEIN, 20 MM TRIS, 1 MM GM1-OS, PH 7.5 200 MM MGCL2, 100 MM CACODYLATE, 19% PEG 1000, 0.2% AGAROSE, PH 7.2 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.26 | 45.69 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 103.4 | α = 90 |
b = 67.61 | β = 131.66 |
c = 101.7 | γ = 90 |
Symmetry | |
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Space Group | C 1 2 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 287 | AREA DETECTOR | SIEMENS | 1995-12-13 | M |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RUH2R |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 15 | 95 | 0.098 | 22182 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
2.3 | 2.38 | 55 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | 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 | THROUGHOUT | PDB ENTRY 1CHP | 2.3 | 15 | 1 | 21343 | 92 | 0.182 | 0.182 | 0.25 | RANDOM | 27 |
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] | |
-0.203 | 4.2029 | -3.3302 | 3.5332 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
x_mcangle_it | 4 |
x_scangle_it | 4 |
x_mcbond_it | 2 |
x_scbond_it | 2 |
x_angle_deg | 1.57 |
x_bond_d | 0.011 |
x_bond_d_na | |
x_bond_d_prot | |
x_angle_d | |
x_angle_d_na |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 4105 |
Nucleic Acid Atoms | |
Solvent Atoms | 151 |
Heterogen Atoms | 137 |
Software
Software | |
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Software Name | Purpose |
XENGEN | data collection |
MACRO | data reduction |
X-PLOR | model building |
X-PLOR | refinement |
XENGEN | data reduction |
MACRO | data scaling |
X-PLOR | phasing |