PDBe 1qv1

X-ray diffraction
1.1Å resolution

Atomic resolution structure of obelin from Obelia longissima


Function and Biology Details

Reaction catalysed:
Coelenterazine h + O(2) = excited coelenteramide h monoanion + CO(2). 
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Obelin Chain: A
Molecule details ›
Chain: A
Length: 195 amino acids
Theoretical weight: 22.24 KDa
Source organism: Obelia longissima
Expression system: Escherichia coli
  • Canonical: Q27709 (Residues: 1-195; Coverage: 100%)
Sequence domains:
Structure domains: EF-hand

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 5.0.2
Spacegroup: C2
Unit cell:
a: 83.334Å b: 54.631Å c: 52.685Å
α: 90° β: 112.29° γ: 90°
R R work R free
0.144 0.144 0.167
Expression system: Escherichia coli