PDBe 1eyp

X-ray diffraction
2.5Å resolution


Source organism: Medicago sativa
Primary publication:
Structure and mechanism of the evolutionarily unique plant enzyme chalcone isomerase.
Nat. Struct. Biol. 7 786-91 (2000)
PMID: 10966651

Function and Biology Details

Reaction catalysed:
A chalcone = a flavanone. 
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Chalcone--flavonone isomerase 1 Chains: A, B
Molecule details ›
Chains: A, B
Length: 222 amino acids
Theoretical weight: 23.85 KDa
Source organism: Medicago sativa
Expression system: Escherichia coli
  • Canonical: P28012 (Residues: 1-222; Coverage: 100%)
Gene names: CHI-1, CHI1
Sequence domains: Chalcone-flavanone isomerase
Structure domains:

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL7-1
Spacegroup: P6522
Unit cell:
a: 90.37Å b: 90.37Å c: 352.86Å
α: 90° β: 90° γ: 120°
R R work R free
0.249 0.249 0.28
Expression system: Escherichia coli