3NQS
Crystal Structure of Inducible Nitric Oxide Synthase with N-Nitrosated-pterin
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3E7M | PDB ENTRY 3E7M |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 5.3 | 278 | 25% Li2SO4, 5% BOG, 50 mM MES, 50 mM CysNO, pH 5.3, VAPOR DIFFUSION, HANGING DROP, temperature 278K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.96 | 68.9 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 214.114 | α = 90 |
b = 214.114 | β = 90 |
c = 116.542 | γ = 120 |
Symmetry | |
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Space Group | P 61 2 2 |
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 315r | 2000-01-10 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL7-1 | 0.98 | SSRL | BL7-1 |
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 | 20 | 94 | 0.115 | 21 | 4 | 77889 | 77889 | 25.3 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
2.17 | 2.25 | 74.6 | 0.415 | 2.5 | 4 | 6090 |
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 3E7M | 2.2 | 19.11 | 77889 | 74686 | 3728 | 93.9 | 0.204 | 0.204 | 0.204 | 0.229 | RANDOM | 45.2 |
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] | |
-10.08 | -10.08 | 20.16 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 22.8 |
c_scangle_it | 3.06 |
c_mcangle_it | 2.1 |
c_scbond_it | 2.1 |
c_mcbond_it | 1.31 |
c_angle_deg | 1.2 |
c_improper_angle_d | 1.15 |
c_bond_d | 0.007 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 6710 |
Nucleic Acid Atoms | |
Solvent Atoms | 598 |
Heterogen Atoms | 225 |
Software
Software | |
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Software Name | Purpose |
ADSC | data collection |
XFIT | data reduction |
CNS | refinement |
DENZO | data reduction |
HKL-2000 | data scaling |