5MGC
STRUCTURE OF E298Q-BETA-GALACTOSIDASE FROM ASPERGILLUS NIGER IN COMPLEX WITH 4-Galactosyl-lactose
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 291 | 26% (W/V) PEG 3350, 0.1M BIS-TRIS BUFFER pH 6.5, 0.2M LITHIUM SULPHATE, then soaked in 30mM 4-Galactosyl-lactose, and cryoprotected with 20% (W/V) PEG 400. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.53 | 51.4 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 59.627 | α = 90 |
b = 106.659 | β = 96.13 |
c = 84.425 | 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 | DECTRIS PILATUS 6M | Kbmirrors | 2016-03-09 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ALBA BEAMLINE XALOC | 1.127140 | ALBA | XALOC |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 2.3 | 83.94 | 99.9 | 0.125 | 0.996 | 10.7 | 6.8 | 46654 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 2.3 | 2.38 | 100 | 0.605 | 0.957 | 3.8 | 6.7 |
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 (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 5IFP | 2.3 | 83.94 | 44242 | 2352 | 99.83 | 0.17058 | 0.1688 | 0.20407 | RANDOM | 34.223 |
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] | |
4.69 | 3.27 | -2.65 | -2.68 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 38.3 |
r_dihedral_angle_4_deg | 15.574 |
r_dihedral_angle_3_deg | 12.445 |
r_dihedral_angle_1_deg | 6.645 |
r_long_range_B_refined | 4.558 |
r_long_range_B_other | 4.558 |
r_scangle_other | 3.398 |
r_mcangle_it | 2.328 |
r_mcangle_other | 2.328 |
r_scbond_it | 2.039 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 7483 |
Nucleic Acid Atoms | |
Solvent Atoms | 201 |
Heterogen Atoms | 400 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
Aimless | data scaling |
MOLREP | phasing |