6YXZ
Structure and activity of the GH20 beta-N-beta-N-acetylhexosaminidase from Bifidobacterium bifidum
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 293 | 21.6 mg/mL of purified protein in the buffer of tris 25 mM pH 8.0 and NaCl 200 mM is mixed with PEG 3350 23%, 0.1 M bis-tris propane PH 6.5 and 0.2 M NaBr at 1:1 ratio. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.52 | 51.25 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 56.566 | α = 90 |
b = 126.75 | β = 90 |
c = 152.71 | 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 | 100 | PIXEL | DECTRIS EIGER2 XE 16M | 2019-05-18 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | DIAMOND BEAMLINE I04 | 0.9795 | Diamond | I04 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | CC (Half) | 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 | 1.75 | 63.38 | 100 | 0.997 | 9 | 7.4 | 111519 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
1 | 1.75 | 1.78 | 100 | 1.654 | 0.969 | 0.61 | 1.1 | 7.4 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Work | R-Free | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | generated by MrBUMP | 1.75 | 63.38 | 111416 | 5615 | 99.947 | 0.163 | 0.1601 | 0.2197 | 27.359 |
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] | |
-3.781 | 1.429 | 2.352 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 33.127 |
r_dihedral_angle_4_deg | 15.553 |
r_dihedral_angle_3_deg | 12.33 |
r_dihedral_angle_1_deg | 7.043 |
r_lrange_it | 6.574 |
r_lrange_other | 6.329 |
r_scangle_it | 5.819 |
r_scangle_other | 5.818 |
r_mcangle_it | 5.197 |
r_mcangle_other | 5.197 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5290 |
Nucleic Acid Atoms | |
Solvent Atoms | 641 |
Heterogen Atoms | 10 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
DIALS | data reduction |
Aimless | data scaling |
SHELXDE | phasing |