1q2o

Bovine endothelial nitric oxide synthase N368D mutant heme domain dimer with L-N(omega)-nitroarginine-2,4-L-diaminobutyramide bound

Method: X-RAY DIFFRACTION Dmax: 94.3 Å Quality: EXCELLENT

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

Nitric-oxide synthase, endothelial

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 66–481 Chain B; UniProt 66–481 Fragment:heme domain of enos enzyme Mutation:N368D CAC CACODYLATE ION × 2 ACT ACETATE ION × 2 ZN ZINC ION × 1 HEM PROTOPORPHYRIN IX CONTAINING FE × 2 H4B 5,6,7,8-TETRAHYDROBIOPTERIN × 2 DP1 L-N(OMEGA)-NITROARGININE-2,4-L-DIAMINOBUTYRIC AMIDE × 2 GOL GLYCEROL × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7;280 K;15% PEG 3350, 200 mM MgOAc, 100 mM Na Cacodylate, 5 mM TCEP, 2 mM imidazole, 3.5 mM L-N(omega)-nitroarginine-L-2,4-diaminobutyramide, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 280K Resolution 1.74 Å R-free 0.220

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 1–416; UniProt 66–481 Author chain B; PDBConstruct 1–416; UniProt 66–481

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 1q2o

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1q2o
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1q2o
Deposition date deposition_date2003-07-25
Structure title titleBovine endothelial nitric oxide synthase N368D mutant heme domain dimer with L-N(omega)-nitroarginine-2,4-L-diaminobutyramide bound
Keywords keywordsoxidoreductase, endothelial nitric oxide synthase, enos, nos III, heme protein; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.95
Radius of gyration Rg (electron density) rg_electron29.10
Forward intensity I(0) i0143795000.00
Molecular weight molecular_weight94186.0 kDa
Excluded volume excluded_volume117300 ų
Envelope volume envelope_volume142430 ų
Hydration-shell volume shell_volume40274 ų
Envelope diameter envelope_diameter94.1
Shell Rg shell_rg37.05
Envelope Rg envelope_rg29.22
Shape Rg shape_rg29.12
Total Rg total_rg29.75
Total atoms total_atoms6630
Residues n_residues810
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 dmax94.3
Rg (real space) rg_real29.89
Rg uncertainty (real space) rg_real_error0.47
I(0) (real space) i0_real1.4380e+08
I(0) uncertainty (real space) i0_real_error2.1600e+06
Rg (reciprocal space) rg_reciprocal29.92
I(0) (reciprocal space) i0_reciprocal143800000.0000
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_primary33.8
Skewness Skewness skewness0.289
Kurtosis Kurtosis kurtosis-0.503
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0002
Highest regularization parameter α highest_alpha44660000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.919; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.956

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_idd1q2oa_
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_idd1q2ob_
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_id1q2oA01
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_id1q2oA02
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_id1q2oA03
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_id1q2oB01
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_id1q2oB02
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_id1q2oB03
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 (2)

9. Files and Curves (10)