1A8D
TETANUS TOXIN C FRAGMENT
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | fiber seeding using cryshed initial crystals as seeds | 7 | 9% (W/V) 1M AMMONIUM PHOSPHATE, PH 6.0, AND 92% OF A 10% (W/V) SOLUTION OF PEG 6000 IN 50MM HEPES (PH 7.0). LARGE CRYSTALS (0.2 X 0.2 X 0.5 MM) WERE GROWN BY FIBER SEEDING, USING CRUSHED INITIAL CRYSTALS AS SEEDS., fiber seeding using cryshed initial crystals as seeds |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.21 | 44.4 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 71.18 | α = 90 |
b = 79.38 | β = 90 |
c = 93.81 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 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 | 120 | CCD | ADSC QUANTUM | SLITS | 1997-12-09 | M |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL1-5 | SSRL | BL1-5 |
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 | 1.57 | 96.6 | 0.0569 | 9.6 | 4.1 | 72263 |
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) | |||||||||||
1.57 | 1.6 | 90.3 | 0.345 | 2.05 | 2.8 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | COMBINED MIR (SIRAS) AND MAD INITIAL REFINEMENT WITH REFMAC AND X-PLOR. FINAL REFINEMENT WITH SHELXL. | THROUGHOUT | 1.57 | 22.5 | 72263 | 7306 | 96.6 | 0.1867 | 0.1785 | 0.2618 | RANDOM |
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] | |
Coordinate Error | ||
---|---|---|
Structure Solution Method | Refinement High Resolution | Refinement Low Resolution |
4082.4 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
s_approx_iso_adps | 0.086 |
s_similar_adp_cmpnt | 0.058 |
s_non_zero_chiral_vol | 0.048 |
s_zero_chiral_vol | 0.035 |
s_from_restr_planes | 0.028 |
s_angle_d | 0.025 |
s_anti_bump_dis_restr | 0.014 |
s_bond_d | 0.008 |
s_rigid_bond_adp_cmpnt | 0.007 |
s_similar_dist |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3657 |
Nucleic Acid Atoms | |
Solvent Atoms | 424 |
Heterogen Atoms | 2 |
Software
Software | |
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Software Name | Purpose |
MOSFLM | data reduction |
SCALA | data scaling |
SHELXL-97 | model building |
SOLVE | phasing |
SHELXL-97 | refinement |
CCP4 | data scaling |
SHELXL-97 | phasing |