1AHP
OLIGOSACCHARIDE SUBSTRATE BINDING IN ESCHERICHIA COLI MALTODEXTRIN PHSPHORYLASE
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.4 | 0.1M NATARTRATE, PH 6.4, 24% PEG 3350, 1MM SODIUM AZIDE, 16 DEG CELCIUS, 50MM MALTOHEXAOSE STOCK, 16.5MG/ML PROTEIN STOCK, HANGING DROPS 1MICRO LITRE WELL & 0.5 MICRO LITRE MALTOHEXAOSE 0.5 MICRO LITRE PROTEIN, vapor diffusion - hanging drop |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.05 | 50 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 173.2 | α = 90 |
b = 112.4 | β = 119.7 |
c = 121.7 | γ = 90 |
Symmetry | |
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Space Group | C 1 2 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 | 100 | IMAGE PLATE | MAR scanner 300 mm plate | MIRRORS | 1995-02-28 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SRS BEAMLINE PX9.6 | SRS | PX9.6 |
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 | 3 | 20 | 81.7 | 0.14 | 5.4 | 1.6 | 33108 | 1 | 57 |
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 | 3 | 3.08 | 80.3 | 0.318 | 1.9 | 1 |
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 REPLACEMENT | THROUGHOUT | MALP NATIVE STRUCTURE | 3 | 10 | 1 | 29121 | 608 | 73 | 0.232 | 0.232 | 0.278 | RANDOM | 25.4 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_dihedral_angle_d | 24 |
x_angle_deg | 1.4 |
x_improper_angle_d | 1.3 |
x_bond_d | 0.008 |
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 | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 12732 |
Nucleic Acid Atoms | |
Solvent Atoms | |
Heterogen Atoms | 98 |
Software
Software | |
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Software Name | Purpose |
X-PLOR | model building |
X-PLOR | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
X-PLOR | phasing |