1AHO
THE AB INITIO STRUCTURE DETERMINATION AND REFINEMENT OF A SCORPION PROTEIN TOXIN
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | 6.8 | pH 6.8 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.96 | 36.43 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 45.9 | α = 90 |
b = 40.7 | β = 90 |
c = 30.1 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 287 | IMAGE PLATE | MARRESEARCH | NA | 1994-06-28 | M |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | EMBL/DESY, HAMBURG BEAMLINE X31 | 0.72, 0.92 | EMBL/DESY, HAMBURG | X31 |
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 | 0.964 | 16 | 91 | 0.073 | 6.7 | 6 | 31001 | 7.23 |
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 | 0.96 | 0.99 | 80 | 0.543 | 1.3 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | DIRECT METHODS | 0.96 | 8 | 2 | 31001 | 30609 | 88 | 0.158 | 0.16 | 10.72 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
p_transverse_tor | 19.5 |
p_staggered_tor | 12.6 |
p_planar_tor | 4.9 |
p_scangle_it | 2.37 |
p_scbond_it | 1.692 |
p_mcangle_it | 1.523 |
p_mcbond_it | 1.106 |
p_xhyhbond_nbd | 0.485 |
p_multtor_nbd | 0.201 |
p_singtor_nbd | 0.192 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 500 |
Nucleic Acid Atoms | |
Solvent Atoms | 129 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
MOSFILM | data collection |
ROTAVATA | data reduction |
Agrovata | data reduction |
SHAKE-N-BAKE | model building |
PROFFT | refinement |
MOSFLM | data reduction |
CCP4 | data scaling |
ROTAVATA | data scaling |
SHAKE-N-BAKE | phasing |