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MECHANISM FOR ALDOSE-KETOSE INTERCONVERSION BY D-XYLOSE ISOMERASE INVOLVING RING OPENING FOLLOWED BY A 1,2-HYDRIDE SHIFT

X-ray diffraction
2.5Å resolution
PDB entry 1xlf coloured by chain, front view.
PDB entry 1xlf coloured by chain, side view.
PDB entry 1xlf coloured by chain, top view.
Source organism: Arthrobacter sp. NRRL B3728
Assembly composition:
homo tetramer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Xylose isomerase
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Multimeric state: homo tetramer
Accessible surface area: 44406.48 Å2
Buried surface area: 34757.31 Å2
Dissociation area: 12,820.35 Å2
Dissociation energy (ΔGdiss): 172.41 kcal/mol
Dissociation entropy (TΔSdiss): 18.2 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-146092

Macromolecules

Xylose isomerase
Chains: A, B
Length: 394 amino acids
Theoretical weight: 43.21 KDa
Source organism: Arthrobacter sp. NRRL B3728
Expression system: Not provided
UniProt:
  • Canonical: P12070 (Residues: 2-395; Coverage: 100%)
Gene name: xylA
Pfam: Xylose isomerase-like TIM barrel
InterPro:
CATH: Divalent-metal-dependent TIM barrel enzymes
SCOP: Xylose isomerase
Xylose isomerase in PDB entry 1xlf, assembly 1, front view.
Xylose isomerase in PDB entry 1xlf, assembly 1, side view.
Xylose isomerase in PDB entry 1xlf, assembly 1, top view.
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