X-ray diffraction
1.6Å resolution

Crystal structure of far-red fluorescent protein Katushka crystallized at pH 5.0


Function and Biology Details

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

Structure analysis Details

Assemblies composition:
homo dimer (preferred)
homo tetramer
Entry contents:
1 distinct polypeptide molecule
Red fluorescent protein eqFP578 Chains: A, B
Molecule details ›
Chains: A, B
Length: 224 amino acids
Theoretical weight: 25.51 KDa
Source organism: Entacmaea quadricolor
Expression system: Escherichia coli
  • Canonical: H3JQU5 (Residues: 1-226; Coverage: 100%)
Sequence domains: Green fluorescent protein
Structure domains: Green fluorescent protein

Ligands and Environments

1 bound ligand:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID
Spacegroup: P6122
Unit cell:
a: 104.364Å b: 104.364Å c: 217.984Å
α: 90° β: 90° γ: 120°
R R work R free
0.188 0.187 0.226
Expression system: Escherichia coli