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Structure of an E. coli Exopolyphosphatase: Insight into the processive hydrolysis of polyphosphate and its regulation

X-ray diffraction
1.9Å resolution
PDB entry 1u6z coloured by chain, front view.
PDB entry 1u6z coloured by chain, side view.
PDB entry 1u6z coloured by chain, top view.
Source organism: Escherichia coli
Assembly composition:
homo dimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Exopolyphosphatase
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Multimeric state: homo dimer
Accessible surface area: 43269.02 Å2
Buried surface area: 8613.98 Å2
Dissociation area: 1,612.11 Å2
Dissociation energy (ΔGdiss): 21.97 kcal/mol
Dissociation entropy (TΔSdiss): 15.06 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-142741

Macromolecules

Exopolyphosphatase
Chains: A, B
Length: 513 amino acids
Theoretical weight: 58.21 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P0AFL6 (Residues: 1-513; Coverage: 100%)
Gene names: JW2487, b2502, ppx
Pfam:
InterPro:
CATH:
SCOP:
Exopolyphosphatase in PDB entry 1u6z, assembly 1, front view.
Exopolyphosphatase in PDB entry 1u6z, assembly 1, side view.
Exopolyphosphatase in PDB entry 1u6z, assembly 1, top view.
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