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Structure of PurE (N5-carboxyaminoimidazole ribonucleotide mutase) mutant H59N from the acidophilic bacterium Acetobacter aceti, at pH 5.4

X-ray diffraction
1.85Å resolution
PDB entry 2fw6 coloured by chain, front view.
PDB entry 2fw6 coloured by chain, side view.
PDB entry 2fw6 coloured by chain, top view.
Source organism: Acetobacter aceti
Assemblies composition:
homo octamer (preferred)
homo hexadecamer
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: N5-carboxyaminoimidazole ribonucleotide mutase
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Multimeric state: homo octamer
Accessible surface area: 36677.45 Å2
Buried surface area: 32731.73 Å2
Dissociation area: 11,431.82 Å2
Dissociation energy (ΔGdiss): 126.59 kcal/mol
Dissociation entropy (TΔSdiss): 43.29 kcal/mol
Symmetry number: 8
PDBe Complex ID: PDB-CPX-173882
Assembly 2
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Assembly Name: N5-carboxyaminoimidazole ribonucleotide mutase
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Multimeric state: homo hexadecamer
Accessible surface area: 71464.74 Å2
Buried surface area: 67353.63 Å2
Dissociation area: 966.29 Å2
Dissociation energy (ΔGdiss): 11.62 kcal/mol
Dissociation entropy (TΔSdiss): 15.08 kcal/mol
Symmetry number: 8
PDBe Complex ID: PDB-CPX-173881

Macromolecules

N5-carboxyaminoimidazole ribonucleotide mutase
Chains: A, B
Length: 183 amino acids
Theoretical weight: 18.86 KDa
Source organism: Acetobacter aceti
Expression system: Escherichia coli
UniProt:
  • Canonical: Q2QJL3 (Residues: 1-182; Coverage: 100%)
Gene name: purE
Pfam: AIR carboxylase
InterPro:
CATH: Rossmann fold
N5-carboxyaminoimidazole ribonucleotide mutase in PDB entry 2fw6, assembly 1, front view.
N5-carboxyaminoimidazole ribonucleotide mutase in PDB entry 2fw6, assembly 1, side view.
N5-carboxyaminoimidazole ribonucleotide mutase in PDB entry 2fw6, assembly 1, top view.
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