3n5r

Structure of endothelial nitric oxide synthase heme domain complexed with 4-(3-(2-(6-amino-4-methylpyridin-2-yl)ethyl)phenethyl)-6-methylpyridin-2-amine

Method: X-RAY DIFFRACTION Dmax: 94.4 Å Quality: EXCELLENT

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

Nitric oxide synthase

Bos taurus

UniProt P29473

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 39–482 Chain B; UniProt 39–482 Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 2 ACT ACETATE ION × 3 GOL GLYCEROL × 2 CAD CACODYLIC ACID × 2 H4B 5,6,7,8-TETRAHYDROBIOPTERIN × 2 XFH 6-(2-{3-[2-(2-amino-6-methylpyridin-4-yl)ethyl]phenyl}ethyl)-4-methylpyridin-2-amine × 2 ZN ZINC ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.5;278 K;9-12% PEG 3350, 0.2M magnesium acetate, 0.1M sodium cacodylate, 0.005M TCEP-HCl , pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 278K Resolution 2.57 Å R-free 0.244

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.

125 other PDB entries and 125 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name NOS3_BOVIN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–444; UniProt 39–482 Author chain B; PDBConstruct 1–444; UniProt 39–482

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 3n5r

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3n5r
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3n5r
Deposition date deposition_date2010-05-25
Structure title titleStructure of endothelial nitric oxide synthase heme domain complexed with 4-(3-(2-(6-amino-4-methylpyridin-2-yl)ethyl)phenethyl)-6-methylpyridin-2-amine
Keywords keywordsnitric oxide synthase, heme enzyme, substrate inhibitor, OXIDOREDUCTASE, OXIDOREDUCTASE-OXIDOREDUCTASE INHIBITOR complex; OXIDOREDUCTASE/OXIDOREDUCTASE INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.97
Radius of gyration Rg (electron density) rg_electron29.07
Forward intensity I(0) i0142531000.00
Molecular weight molecular_weight94458.0 kDa
Excluded volume excluded_volume117900 ų
Envelope volume envelope_volume142610 ų
Hydration-shell volume shell_volume40364 ų
Envelope diameter envelope_diameter94.6
Shell Rg shell_rg37.05
Envelope Rg envelope_rg29.17
Shape Rg shape_rg29.08
Total Rg total_rg29.73
Total atoms total_atoms6653
Residues n_residues811
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 dmax94.4
Rg (real space) rg_real29.91
Rg uncertainty (real space) rg_real_error0.58
I(0) (real space) i0_real1.4250e+08
I(0) uncertainty (real space) i0_real_error2.1310e+06
Rg (reciprocal space) rg_reciprocal29.94
I(0) (reciprocal space) i0_reciprocal142500000.0000
Solution quality estimate total_estimate0.9014
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary92.6
Skewness Skewness skewness0.286
Kurtosis Kurtosis kurtosis-0.501
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha42940000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.918; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.959

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (9)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3n5ra_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.174 — Nitric oxide (NO) synthase oxygenase domain
Superfamily Superfamily superfamilyd.174.1 — Nitric oxide (NO) synthase oxygenase domain
Family Family familyd.174.1.1 — Nitric oxide (NO) synthase oxygenase domain
Domain ID domain_idd3n5rb_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.174 — Nitric oxide (NO) synthase oxygenase domain
Superfamily Superfamily superfamilyd.174.1 — Nitric oxide (NO) synthase oxygenase domain
Family Family familyd.174.1.1 — Nitric oxide (NO) synthase oxygenase domain

CATH v4.4 (6 domains)

Domain ID domain_id3n5rA01
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology340 — Nitric Oxide Synthase; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Nitric Oxide Synthase; Chain A, domain 1
Domain ID domain_id3n5rA02
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology440 — Nitric Oxide Synthase;Heme Domain; Chain A, domain 2
Homologous superfamily homologous superfamily10 — Nitric Oxide Synthase;Heme Domain;Chain A domain 2
Domain ID domain_id3n5rA03
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology1230 — Bovine Endothelial Nitric Oxide Synthase Heme Domain; Chain: A,domain 3
Homologous superfamily homologous superfamily10 — Nitric Oxide Synthase; Chain A, domain 3
Domain ID domain_id3n5rB01
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology340 — Nitric Oxide Synthase; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Nitric Oxide Synthase; Chain A, domain 1
Domain ID domain_id3n5rB02
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology440 — Nitric Oxide Synthase;Heme Domain; Chain A, domain 2
Homologous superfamily homologous superfamily10 — Nitric Oxide Synthase;Heme Domain;Chain A domain 2
Domain ID domain_id3n5rB03
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology1230 — Bovine Endothelial Nitric Oxide Synthase Heme Domain; Chain: A,domain 3
Homologous superfamily homologous superfamily10 — Nitric Oxide Synthase; Chain A, domain 3

8. Citations (1)

9. Files and Curves (10)