1BJI
THE X-RAY STRUCTURE OF A COMPLEX OF TERN N9 INFLUENZA VIRUS NEURAMINIDASE COMPLEXED WITH THE GLAXO 6-CARBOXAMIDE SIALIC ACID ANALOGUE GR217029
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | 7 | 1.9M PHOSPHATE(PH 5.9) THE GLAXO 6-CARBOXAMIDE COMPOUND GR217029 WAS SOAKED IN TERN N9 NEURAMININDASE CRYSTALS AT 5 MM FOR 24HR. THIS EXPERIMENT WAS CARRIED OUT TO DETERMINE THE BINDING MODE OF THE 6-CARBOXAMIDE HYDROPHOBIC GROUP. A NEW HYDROPHOBIC POCKET WAS DISCOVERED EARLIER WITH A METHYL, ETHYL GROUP ATTACHED TO THE AMIDE OF TH3E SIX-CARBOXAMIDE. THIS COMPOUND HAS A MUCH LARGER HYDROPHOBIC GROUP ATTACHED., pH 7.0 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.91 | 54 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 182.8 | α = 90 |
b = 182.8 | β = 90 |
c = 182.8 | γ = 90 |
Symmetry | |
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Space Group | I 4 3 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 300 | IMAGE PLATE | RIGAKU | YALE MIRRORS | 1994-06-10 | M |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | MACSCIENCE M18X |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 100 | 68 | 0.096 | 0.084 | 5.07 | 119194 | 2 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
1 | 2.012 | 2.151 | 27 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | TERN N9 NEURAMINIDASE | 2 | 6 | 2 | 22246 | 68 | 0.155 | 0.155 |
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] | |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
x_dihedral_angle_d | 25.6 |
x_scangle_it | 3.5 |
x_mcangle_it | 3 |
x_scbond_it | 3 |
x_mcbond_it | 2.5 |
x_angle_deg | 1.9 |
x_improper_angle_d | 1.53 |
x_bond_d | 0.014 |
x_bond_d_na | |
x_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3067 |
Nucleic Acid Atoms | |
Solvent Atoms | 191 |
Heterogen Atoms | 140 |
Software
Software | |
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Software Name | Purpose |
R-AXIS | data collection |
PROTEIN | data reduction |
X-PLOR | model building |
X-PLOR | refinement |
R-AXIS | data reduction |
PROTEIN | data scaling |
X-PLOR | phasing |