3krk

X-ray crystal structure of arachidonic acid bound in the cyclooxygenase channel of L531F murine COX-2

Method: X-RAY DIFFRACTION Dmax: 101.3 Å Quality: GOOD

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

Prostaglandin G/H synthase 2

Mus musculus

UniProt Q05769

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Homooligomer Protein × 2 其他Polymer 4 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 20–604 Chain B; UniProt 20–604 Fragment:UNP residues 20-604 Mutation:L531F 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 3 alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ACD ARACHIDONIC ACID × 2 AKR ACRYLIC ACID × 4 GOL GLYCEROL × 3 COH PROTOPORPHYRIN IX CONTAINING CO × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 BOG octyl beta-D-glucopyranoside × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;296 K;23-34% Polyacrylic acid 5100, 0.1M Hepes pH 7.5, 0.02M MgCl2, VAPOR DIFFUSION, SITTING DROP, temperature 296K Resolution 2.40 Å R-free 0.228

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.

47 other PDB entries and 70 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PGH2_MOUSE
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 7–591; UniProt 20–604 Author chain B; PDBConstruct 7–591; UniProt 20–604

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 3krk

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id3krk
Deposition date deposition_date2009-11-18
Structure title titleX-ray crystal structure of arachidonic acid bound in the cyclooxygenase channel of L531F murine COX-2
Keywords keywords;COX-2, Dioxygenase, Disulfide bond, Endoplasmic reticulum, Fatty acid biosynthesis, Glycoprotein, Heme, Iron, Lipid synthesis, Membrane, Metal-binding, Microsome, Oxidoreductase, Peroxidase, Phosphoprotein, Prostaglandin biosynthesis ;; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier32.16
Radius of gyration Rg (electron density) rg_electron31.28
Forward intensity I(0) i0251323000.00
Molecular weight molecular_weight131230.0 kDa
Excluded volume excluded_volume165600 ų
Envelope volume envelope_volume196860 ų
Hydration-shell volume shell_volume50243 ų
Envelope diameter envelope_diameter103.6
Shell Rg shell_rg40.13
Envelope Rg envelope_rg31.27
Shape Rg shape_rg31.25
Total Rg total_rg32.09
Total atoms total_atoms9258
Residues n_residues1101
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 dmax101.3
Rg (real space) rg_real32.01
Rg uncertainty (real space) rg_real_error0.66
I(0) (real space) i0_real2.5130e+08
I(0) uncertainty (real space) i0_real_error4.0790e+06
Rg (reciprocal space) rg_reciprocal32.08
I(0) (reciprocal space) i0_reciprocal251300000.0000
Solution quality estimate total_estimate0.8241
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary39.3
Skewness Skewness skewness0.207
Kurtosis Kurtosis kurtosis-0.477
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha66620000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.909; Stabil: 0.996; Sysdev: 1.000; Positv: 1.000; Valcen: 0.992; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (10)

7. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id3krkA01
Class class2 — Mainly Beta
Architecture architecture10 — Ribbon
Topology topology25 — Laminin
Homologous superfamily homologous superfamily10 — Laminin
Domain ID domain_id3krkA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology640 — Myeloperoxidase, subunit C
Homologous superfamily homologous superfamily10 — Haem peroxidase domain superfamily, animal type
Domain ID domain_id3krkB01
Class class2 — Mainly Beta
Architecture architecture10 — Ribbon
Topology topology25 — Laminin
Homologous superfamily homologous superfamily10 — Laminin
Domain ID domain_id3krkB02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology640 — Myeloperoxidase, subunit C
Homologous superfamily homologous superfamily10 — Haem peroxidase domain superfamily, animal type

8. Citations (1)

9. Files and Curves (10)