1M24
Trichotoxin_A50E, An Ion Channel-Forming Polypeptide
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | METHANOL:ACETONITRILE 1:10, EVAPORATION, RECRYSTALLIZATION, TEMPERATURE 268K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.3 | 8.28 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 9.49 | α = 95.77 |
b = 16.85 | β = 98.07 |
c = 31.68 | γ = 99.45 |
Symmetry | |
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Space Group | P 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 | 150 | CCD | ADSC QUANTUM 4 | 2001-04-24 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SRS | SRS |
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 | 0.9 | 10 | 99.7 | 0.0514 | 15.03 | 2.79 | 13427 |
Highest Resolution Shell | |||||||||||||||||||
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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 | 0.9 | 0.95 | 99.9 | 0.2614 | 2.36 | 2.18 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | MODEL OF HELICAL PEPTIDE, RESIDUES 1-13. | 0.9 | 10 | 13427 | 688 | 99.7 | 0.076 | 0.075 | 0.11 | 0.092 | RANDOM |
Coordinate Error | ||
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Structure Solution Method | Refinement High Resolution | Refinement Low Resolution |
278 | 249 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
s_non_zero_chiral_vol | 1.186 |
s_zero_chiral_vol | 0.101 |
s_approx_iso_adps | 0.091 |
s_similar_adp_cmpnt | 0.03 |
s_bond_d | 0.026 |
s_angle_d | 0.026 |
s_from_restr_planes | 0.026 |
s_rigid_bond_adp_cmpnt | 0.006 |
s_similar_dist | |
s_anti_bump_dis_restr |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 238 |
Nucleic Acid Atoms | |
Solvent Atoms | 5 |
Heterogen Atoms | 6 |
Software
Software | |
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Software Name | Purpose |
MOLREP | phasing |
ARP/wARP | model building |
SHELXL-97 | refinement |
SMART | data reduction |