4S3Q
Amylomaltase MalQ from Escherichia coli in complex with maltose
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 4S3R |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8 | 295 | 20 %(w/v) PEG3350, 200 mM NaH2PO4, 250 mM NaCl, 20 mM Tris-HCl, protein concentration 13 mg/ml, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 295K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.75 | 55.2 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 75.132 | α = 76.11 |
b = 77.019 | β = 75.48 |
c = 128.403 | γ = 66.31 |
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 | 100 | CCD | MARMOSAIC 225 mm CCD | mirror | 2013-12-12 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | BESSY BEAMLINE 14.2 | 0.91841 | BESSY | 14.2 |
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 | 2.1 | 35 | 94.3 | 0.058 | 12.02 | 2.1 | 138781 | 138781 | -3 | -3 | 36.54 |
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 | 2.1 | 2.2 | 96.4 | 0.394 | 3.03 |
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 (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 | 4S3R | 2.1 | 34.23 | 138780 | 138780 | 6970 | 94.33 | 0.2227 | 0.2227 | 0.2208 | 0.2584 | RANDOM | 39.119 |
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] | |
0.03 | -1 | -0.05 | -0.88 | 0.15 | 0.27 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 36.111 |
r_dihedral_angle_4_deg | 16.926 |
r_dihedral_angle_3_deg | 14.025 |
r_dihedral_angle_1_deg | 5.759 |
r_angle_refined_deg | 1.275 |
r_mcangle_it | 0.771 |
r_angle_other_deg | 0.769 |
r_mcbond_it | 0.436 |
r_mcbond_other | 0.436 |
r_chiral_restr | 0.072 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 16350 |
Nucleic Acid Atoms | |
Solvent Atoms | 467 |
Heterogen Atoms | 51 |
Software
Software | |
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Software Name | Purpose |
XSCALE | data scaling |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
MAR345 | data collection |
XDS | data reduction |
PHASER | phasing |