Structure of neuronal nitric oxide synthase D597N/M336V mutant heme domain in complex with 6,6'-(2,2'-(5-amino-1,3-phenylene)bis(ethane-2,1-diyl))bis(4-methylpyridin-2-amine)
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details | 
| experimental model | PDB | 1OM4 | PDB entry 1OM4 | 
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details | 
| 1 | VAPOR DIFFUSION, SITTING DROP | 5.8 | 277 | 20-24% PEG3350 100mM MES 100-140mM ammonium acetate 5mM GSH, 35uM SDS, pH 5.8, VAPOR DIFFUSION, SITTING DROP, temperature 277K | 
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content | 
| 2.41 | 49.05 | 
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) | 
| a = 51.802 | α = 90 | 
| b = 110.981 | β = 90 | 
| c = 163.996 | γ = 90 | 
| Symmetry | |
|---|---|
| Space Group | P 21 21 21 | 
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 100 | CCD | ADSC QUANTUM 315 | mirror | 2009-03-28 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline | 
| 1 | SYNCHROTRON | SSRL BEAMLINE BL7-1 | 1.000 | SSRL | BL7-1 | 
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 50 | 97 | 0.065 | 0.065 | 20.9 | 3.9 | 62815 | -3 | 31.3 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
| 2 | 2.03 | 82.4 | 0.464 | 0.464 | 2 | 3.2 | |||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||||
| X-RAY DIFFRACTION | FOURIER SYNTHESIS | THROUGHOUT | PDB entry 1OM4 | 2 | 41.06 | 59633 | 3093 | 96.92 | 0.19672 | 0.19465 | 0.21 | 0.23606 | 0.24 | RANDOM | 49.021 | ||||
| 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] | |
| 3.15 | 0.48 | -3.63 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation | 
| r_dihedral_angle_2_deg | 33.236 | 
| r_dihedral_angle_4_deg | 18.967 | 
| r_dihedral_angle_3_deg | 15.151 | 
| r_dihedral_angle_1_deg | 5.962 | 
| r_scangle_it | 2.971 | 
| r_scbond_it | 1.912 | 
| r_angle_refined_deg | 1.424 | 
| r_mcangle_it | 1.151 | 
| r_mcbond_it | 0.635 | 
| r_chiral_restr | 0.097 | 
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number | 
| Protein Atoms | 6656 | 
| Nucleic Acid Atoms | |
| Solvent Atoms | 269 | 
| Heterogen Atoms | 155 | 
Software
| Software | |
|---|---|
| Software Name | Purpose | 
| REFMAC | refinement | 
| CNS | refinement | 
| Blu-Ice | data collection | 
| DENZO | data reduction | 
| SCALEPACK | data scaling | 
| CNS | phasing | 














