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The structure of archaeal Inorganic Pyrophosphatase in complex with pyrophosphate

X-ray diffraction
1.4Å resolution
PDB entry 5ucq coloured by chain, front view.
PDB entry 5ucq coloured by chain, side view.
PDB entry 5ucq coloured by chain, top view.
Source organism: Thermococcus thioreducens
Assembly composition:
homo trimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Inorganic pyrophosphatase
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Multimeric state: homo trimer
Accessible surface area: 19796.77 Å2
Buried surface area: 9155.98 Å2
Dissociation area: 2,700.46 Å2
Dissociation energy (ΔGdiss): 8.56 kcal/mol
Dissociation entropy (TΔSdiss): 25.41 kcal/mol
Symmetry number: 3
PDBe Complex ID: PDB-CPX-124703

Macromolecules

Inorganic pyrophosphatase
Chains: A, B, C
Length: 178 amino acids
Theoretical weight: 20.88 KDa
Source organism: Thermococcus thioreducens
Expression system: Escherichia coli
UniProt:
  • Canonical: H0USY5 (Residues: 1-178; Coverage: 100%)
Gene names: A3L14_01550, SAMN05216170_1971, ppa
Pfam: Inorganic pyrophosphatase
InterPro:
CATH: Inorganic pyrophosphatase
Inorganic pyrophosphatase in PDB entry 5ucq, assembly 1, front view.
Inorganic pyrophosphatase in PDB entry 5ucq, assembly 1, side view.
Inorganic pyrophosphatase in PDB entry 5ucq, assembly 1, top view.
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