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CRYSTAL STRUCTURE OF QUERCETIN 2,3-DIOXYGENASE ANAEROBICALLY COMPLEXED WITH THE SUBSTRATE QUERCETN

X-ray diffraction
1.75Å resolution
PDB entry 1h1i coloured by chain, front view.
PDB entry 1h1i coloured by chain, side view.
PDB entry 1h1i coloured by chain, top view.
Source organism: Aspergillus japonicus
Assembly composition:
homo dimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1
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Assembly Name: Quercetin 2,3-dioxygenase
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Multimeric state: homo dimer
Accessible surface area: 24149.73 Å2
Buried surface area: 9327.45 Å2
Dissociation area: 2,631.2 Å2
Dissociation energy (ΔGdiss): 28.77 kcal/mol
Dissociation entropy (TΔSdiss): 14.24 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-181949
Assembly 2 (preferred)
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Assembly Name: Quercetin 2,3-dioxygenase
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Multimeric state: homo dimer
Accessible surface area: 23979.8 Å2
Buried surface area: 8883.42 Å2
Dissociation area: 2,544.03 Å2
Dissociation energy (ΔGdiss): 29.17 kcal/mol
Dissociation entropy (TΔSdiss): 14.21 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-181949

Macromolecules

Quercetin 2,3-dioxygenase
Chains: A, B, C, D
Length: 350 amino acids
Theoretical weight: 37.96 KDa
Source organism: Aspergillus japonicus
Expression system: Aspergillus awamori
UniProt:
  • Canonical: Q7SIC2 (Residues: 1-350; Coverage: 100%)
InterPro:
CATH: Jelly Rolls
SCOP: Quercetin 2,3-dioxygenase-like
Quercetin 2,3-dioxygenase in PDB entry 1h1i, assembly 2, front view.
Quercetin 2,3-dioxygenase in PDB entry 1h1i, assembly 2, side view.
Quercetin 2,3-dioxygenase in PDB entry 1h1i, assembly 2, top view.
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