8SYB
X-ray crystal structure of UDP-2,3-diacetamido-2,3-dideoxy-glucuronic acid-2-epimerase from Thermus thermophilus strain HB27, D98N variant in the presence of UDP-2,3-diacetamido-2,3-dideoxy-glucuronic acid and UDP-N-acetylglucosamine at pH 9
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 9 | 293 | protein incubated with 5 mM UDP-2,3-diacetamido-2,3-dideoxy-glucuronic acid and 5 mM UDP-N-acetyl-glucosamine. Precipitant used was 18-22% poly(ethylene glycol) 8000, 200 mM KCl, 100 mM CHES (pH9) |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.29 | 46.17 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 55.842 | α = 90 |
b = 128.195 | β = 113.63 |
c = 58.525 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 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 | PIXEL | Bruker PHOTON II | 2023-02-22 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SEALED TUBE | BRUKER D8 QUEST | 1.5418 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 2.2 | 50 | 99.4 | 0.084 | 10.7 | 7.2 | 38034 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | R Split (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 2.2 | 2.3 | 98.4 | 0.38 | 2.3 | 3.7 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | 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 | 2.2 | 44.79 | 36209 | 1825 | 99.45 | 0.1939 | 0.19094 | 0.25296 | RANDOM | 25.16 |
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] | |
-0.01 | -0.01 | -0.01 | 0.02 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_3_deg | 15.805 |
r_dihedral_angle_2_deg | 8.407 |
r_dihedral_angle_1_deg | 6.966 |
r_long_range_B_refined | 6.091 |
r_long_range_B_other | 6.081 |
r_scangle_other | 4.415 |
r_mcangle_other | 3.197 |
r_mcangle_it | 3.195 |
r_scbond_other | 2.685 |
r_scbond_it | 2.684 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5666 |
Nucleic Acid Atoms | |
Solvent Atoms | 226 |
Heterogen Atoms | 167 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
SAINT | data reduction |
SADABS | data scaling |
PHASER | phasing |