7m56

Structure of human endothelial nitric oxide synthase heme domain in complex with 7-((3-(3-aminophenethyl)phenoxy)methyl)quinolin-2-amine

Method: X-RAY DIFFRACTION Dmax: 94.6 Å Quality: EXCELLENT

1. Protein Identity and Related Structures Protein Identity & Related Structures

Nitric oxide synthase, endothelial

Homo sapiens

UniProt P29474

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 41–480 Chain B; UniProt 41–480 Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 2 H4B 5,6,7,8-TETRAHYDROBIOPTERIN × 2 V5G 7-({3-[2-(6-aminopyridin-2-yl)ethyl]phenoxy}methyl)quinolin-2-amine × 3 ACT ACETATE ION × 3 BTB 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 2 ZN ZINC ION × 1 GOL GLYCEROL × 2 GD GADOLINIUM ATOM × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;277 K;10-12% PEG3350, 0.1M BIS-TRIS 0.2-0.3M MG ACETATE, 0.1M GDCL3 10% GLYCEROL, 5 MM TCEP Resolution 1.96 Å R-free 0.210

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

94 other PDB entries and 183 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name NOS3_HUMAN
Isoform P29474-3
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–440; UniProt 41–480 Author chain B; PDBConstruct 1–440; UniProt 41–480

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 7m56

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7m56
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7m56
Deposition date deposition_date2021-03-22
Structure title titleStructure of human endothelial nitric oxide synthase heme domain in complex with 7-((3-(3-aminophenethyl)phenoxy)methyl)quinolin-2-amine
Keywords keywordsnitric oxide synthase inhibitor heme enzymes, OXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier30.18
Radius of gyration Rg (electron density) rg_electron29.32
Forward intensity I(0) i0142247000.00
Molecular weight molecular_weight94557.0 kDa
Excluded volume excluded_volume118010 ų
Envelope volume envelope_volume143310 ų
Hydration-shell volume shell_volume40241 ų
Envelope diameter envelope_diameter97.6
Shell Rg shell_rg37.14
Envelope Rg envelope_rg29.53
Shape Rg shape_rg29.31
Total Rg total_rg30.05
Total atoms total_atoms6662
Residues n_residues802
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax94.6
Rg (real space) rg_real30.12
Rg uncertainty (real space) rg_real_error0.49
I(0) (real space) i0_real1.4220e+08
I(0) uncertainty (real space) i0_real_error1.8870e+06
Rg (reciprocal space) rg_reciprocal30.15
I(0) (reciprocal space) i0_reciprocal142200000.0000
Solution quality estimate total_estimate0.9012
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks0
Primary peak position r_peak_primary
Skewness Skewness skewness0.295
Kurtosis Kurtosis kurtosis-0.495
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha43180000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.926; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.935

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (10)

8. Citations (1)

9. Files and Curves (10)