4e1g

X-ray crystal structure of alpha-linolenic acid bound to the cyclooxygenase channel of cyclooxygenase-2

Method: X-RAY DIFFRACTION Dmax: 99.1 Å Quality: EXCELLENT

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 1–604 Chain B; UniProt 1–604 Fragment:UNP Residues 1-604 Mutation:N580A 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 LNL ALPHA-LINOLENIC ACID × 2 COH PROTOPORPHYRIN IX CONTAINING CO × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 BOG octyl beta-D-glucopyranoside × 1 EDO 1,2-ETHANEDIOL × 7 AKR ACRYLIC ACID × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;296 K;23-34% Polyacrylic acid 5100, 100mM HEPES pH 7.5, 20mM MgCl2, VAPOR DIFFUSION, SITTING DROP, temperature 296K Resolution 2.10 Å R-free 0.203

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 1–610; UniProt 1–604 Author chain B; PDBConstruct 1–610; UniProt 1–604

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 4e1g

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4e1g
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4e1g
Deposition date deposition_date2012-03-06
Structure title titleX-ray crystal structure of alpha-linolenic acid bound to the cyclooxygenase channel of cyclooxygenase-2
Keywords keywordsMonotopic Membrane Protein, Biological Dimer, Oxidoreductase, COX-2, N-glycosylation, Membrane of ER; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier32.00
Radius of gyration Rg (electron density) rg_electron31.14
Forward intensity I(0) i0247340000.00
Molecular weight molecular_weight130030.0 kDa
Excluded volume excluded_volume163970 ų
Envelope volume envelope_volume193310 ų
Hydration-shell volume shell_volume49622 ų
Envelope diameter envelope_diameter102.8
Shell Rg shell_rg40.01
Envelope Rg envelope_rg31.09
Shape Rg shape_rg31.12
Total Rg total_rg31.92
Total atoms total_atoms9175
Residues n_residues1100
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 dmax99.1
Rg (real space) rg_real31.84
Rg uncertainty (real space) rg_real_error0.52
I(0) (real space) i0_real2.4730e+08
I(0) uncertainty (real space) i0_real_error3.2950e+06
Rg (reciprocal space) rg_reciprocal31.91
I(0) (reciprocal space) i0_reciprocal247400000.0000
Solution quality estimate total_estimate0.9012
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary38.4
Skewness Skewness skewness0.207
Kurtosis Kurtosis kurtosis-0.484
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha61170000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.936; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.912

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_id4e1gA01
Class class2 — Mainly Beta
Architecture architecture10 — Ribbon
Topology topology25 — Laminin
Homologous superfamily homologous superfamily10 — Laminin
Domain ID domain_id4e1gA02
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_id4e1gB01
Class class2 — Mainly Beta
Architecture architecture10 — Ribbon
Topology topology25 — Laminin
Homologous superfamily homologous superfamily10 — Laminin
Domain ID domain_id4e1gB02
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)