CRYSTAL STRUCTURE OF THE B SUBUNIT OF HUMAN HEAT-LABILE ENTEROTOXIN FROM E. COLI CARRYING A PEPTIDE WITH ANTI-HSV ACTIVITY
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1LTS | PDB ENTRY 1LTS, CHAINS D-H |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | 6 | pH 6 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
5.54 | 78 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 127.23 | α = 90 |
b = 127.23 | β = 90 |
c = 174.19 | γ = 90 |
Symmetry | |
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Space Group | P 41 21 2 |
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 | IMAGE PLATE AREA DETECTOR | MARRESEARCH | MIRRORS | 1998-02-09 | M |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ELETTRA BEAMLINE 5.2R | ELETTRA | 5.2R |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym 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 | 3.04 | 23.19 | 97.5 | 0.041 | 0.044 | 11.8 | 3.5 | 27477 | 2 | 40 |
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) | |||||||||||
3.04 | 3.39 | 95.6 | 0.073 | 0.1 | 3.4 |
Refinement
Statistics | |||||||||||||||||||
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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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | |||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 1LTS, CHAINS D-H | 3.04 | 8 | 2 | 25803 | 1770 | 92 | 0.1828 | 0.1828 | 0.18 | 0.217 | 0.21 | RANDOM | 23 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
x_dihedral_angle_d | 18 |
x_angle_deg | 1.3 |
x_improper_angle_d | 1 |
x_bond_d | 0.007 |
x_bond_d_na | |
x_bond_d_prot | |
x_angle_d | |
x_angle_d_na | |
x_angle_d_prot | |
x_angle_deg_na |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 4381 |
Nucleic Acid Atoms | |
Solvent Atoms | 116 |
Heterogen Atoms | 30 |
Software
Software | |
---|---|
Software Name | Purpose |
MOSFLM | data reduction |
SCALE | data reduction |
AMoRE | phasing |
X-PLOR | refinement |
CCP4 | data scaling |