PDBe 1s36

X-ray diffraction
1.96Å resolution

Crystal structure of a Ca2+-discharged photoprotein: Implications for the mechanisms of the calcium trigger and the bioluminescence

Released:

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Obelin Chain: A
Molecule details ›
Chain: A
Length: 195 amino acids
Theoretical weight: 22.22 KDa
Source organism: Obelia longissima
Expression system: Escherichia coli
UniProt:
  • 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: RIGAKU
Spacegroup: P41212
Unit cell:
a: 53.445Å b: 53.445Å c: 144.032Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.225 0.223 0.259
Expression system: Escherichia coli