3L2M
X-ray Crystallographic Analysis of Pig Pancreatic Alpha-Amylase with Alpha-cyclodextrin
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | EVAPORATION | 6.75 | 298 | 0.010 M cacodylate, 0.002 M calcium chloride, soaking of alpha-cyclodextrin, pH 6.75, EVAPORATION, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
4.35 | 71.72 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 70.65 | α = 90 |
b = 114.88 | β = 90 |
c = 118.85 | 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 | 298 | AREA DETECTOR | SDMS | 1993-06-17 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RU200 | 1.5418 |
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 | 1.97 | 29.3 | 84.6 | 0.068 | 19.83 | 4.84 | 62592 | 62592 | 22 |
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 | 1.97 | 2.07 | 36.6 | 0.178 | 3.07 | 1.61 | 5276 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | 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 | MOLECULAR REPLACEMENT | THROUGHOUT | 1.97 | 29.3 | 55805 | 55805 | 6279 | 89.25 | 0.13005 | 0.13005 | 0.12666 | 0.16021 | RANDOM | 18.81 |
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] | |
0.49 | -0.48 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.692 |
r_dihedral_angle_4_deg | 18.079 |
r_dihedral_angle_3_deg | 13.896 |
r_dihedral_angle_1_deg | 5.89 |
r_scangle_it | 4.917 |
r_scbond_it | 3.789 |
r_mcangle_it | 3.128 |
r_scangle_other | 2.392 |
r_mcbond_it | 2.148 |
r_mcangle_other | 1.799 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3909 |
Nucleic Acid Atoms | |
Solvent Atoms | 592 |
Heterogen Atoms | 200 |
Software
Software | |
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Software Name | Purpose |
SDMS | data collection |
REFMAC | refinement |
SDMS | data reduction |
SDMS | data scaling |