3STG
Crystal structure of A58P, DEL(N59), and loop 7 truncated mutant of 3-deoxy-D-manno-octulosonate 8-phosphate synthase (KDO8PS) from Neisseria meningitidis
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3STC | PDB ENTRY 3STC |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.6 | 297 | 20 mg/mL protein (in 10 mM BTP pH 7.5) mixed 1:1 with reservoir liquor containing 100 mM NaOAc (pH 4.6) and 0.6-3.0 M NaCl. Immediately prior to data collection, crystals were harvested and soaked briefly in cryoprotectant solution, comprising 20% glycerol and the reservoir solution, Vapor diffusion, hanging drop, temperature 297K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.7 | 54.46 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 81.69 | α = 90 |
b = 104.05 | β = 90 |
c = 149.62 | 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 | CCD | ADSC QUANTUM 210r | 2010-09-01 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | AUSTRALIAN SYNCHROTRON BEAMLINE MX1 | 0.95368 | Australian Synchrotron | MX1 |
Data Collection
Overall | |||||||||||||||||||
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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 | 36.849 | 100 | 0.087 | 18.9 | 7.3 | 65469 | 65469 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Rrim I (All) | Rpim I (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 2.2 | 2.32 | 100 | 0.347 | 0.347 | 0.373 | 0.137 | 1.8 | 7.4 | 9423 |
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 | PDB ENTRY 3STC | 2.2 | 35.99 | 65395 | 65395 | 3250 | 99.96 | 0.1992 | 0.1992 | 0.1972 | 0.2377 | RANDOM | 24.8155 |
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] | |
0.17 | 0.35 | -0.52 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_1_deg | 5.648 |
r_angle_refined_deg | 1.101 |
r_angle_other_deg | 0.867 |
r_chiral_restr | 0.067 |
r_bond_refined_d | 0.009 |
r_gen_planes_refined | 0.003 |
r_bond_other_d | 0.001 |
r_gen_planes_other | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 8054 |
Nucleic Acid Atoms | |
Solvent Atoms | 574 |
Heterogen Atoms | 12 |
Software
Software | |
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Software Name | Purpose |
MOSFLM | data reduction |
SCALA | data scaling |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
ADSC | data collection |