3ERA
RECOMBINANT ERABUTOXIN A (S8T MUTANT)
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.5 | CRYSTALLIZATION WERE PERFORMED AT 291K BY THE HANGING DROP METHOD. DROPS OF 2 MICROLITRE OF 0.007M PROTEIN AND 2 MICROLITRE OF RESERVOIR WERE EQUILIBRATED AGAINST 0.32M NASCN, 0.05M NAOAC BUFFER SOLUTION (PH 4.5), vapor diffusion - hanging drop |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.2 | 47 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 55.418 | α = 90 |
b = 53.013 | β = 90 |
c = 40.467 | 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 | 278 | IMAGE PLATE | MARRESEARCH | MIRRORS | 1995-07-16 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | LURE BEAMLINE DW32 | LURE | DW32 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 1.7 | 13.9 | 99.4 | 0.069 | 9.7 | 3.4 | 13459 | 3 | 12.6 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1.7 | 1.79 | 99.7 | 0.29 | 2.5 | 3.2 |
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 | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR | THROUGHOUT | STRUCTURE OF RECOMBINANT ERABUTOXIN A (S8G MUTANT) | 1.7 | 10 | 2 | 12566 | 1243 | 96.9 | 0.179 | 0.179 | 0.224 | RANDOM | 15.6 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_dihedral_angle_d | 25.95 |
x_scangle_it | 2.5 |
x_mcangle_it | 2 |
x_scbond_it | 2 |
x_angle_deg | 1.59 |
x_mcbond_it | 1.5 |
x_improper_angle_d | 1.29 |
x_bond_d | 0.006 |
x_bond_d_na | |
x_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 958 |
Nucleic Acid Atoms | |
Solvent Atoms | 116 |
Heterogen Atoms | 9 |
Software
Software | |
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Software Name | Purpose |
MOSFLM | data reduction |
ROTAVATA | data reduction |
X-PLOR | model building |
X-PLOR | refinement |
CCP4 | data scaling |
ROTAVATA | data scaling |
X-PLOR | phasing |