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Structure of Phosphopantetheine adenylyltransferase (PPAT) from Enterobacter sp. with the expression tag bound in the substrate binding site of a neighbouring molecule at 2.65 A resolution.

X-ray diffraction
2.651Å resolution
PDB entry 8zn2 coloured by chain, front view.
PDB entry 8zn2 coloured by chain, side view.
PDB entry 8zn2 coloured by chain, top view.
Source organism: Enterobacter sp. 638
Assembly composition:
homo dimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1
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Assembly Name: Phosphopantetheine adenylyltransferase
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Multimeric state: homo dimer
Accessible surface area: 16223.44 Å2
Buried surface area: 3441.54 Å2
Dissociation area: 1,339.44 Å2
Dissociation energy (ΔGdiss): 18.58 kcal/mol
Dissociation entropy (TΔSdiss): 12.4 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-107462
Assembly 2 (preferred)
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Assembly Name: Phosphopantetheine adenylyltransferase
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Multimeric state: homo dimer
Accessible surface area: 15341.14 Å2
Buried surface area: 3238.3 Å2
Dissociation area: 1,172.97 Å2
Dissociation energy (ΔGdiss): 14.68 kcal/mol
Dissociation entropy (TΔSdiss): 12.2 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-107462
Assembly 3
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Assembly Name: Phosphopantetheine adenylyltransferase
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Multimeric state: homo dimer
Accessible surface area: 16160.65 Å2
Buried surface area: 3581.64 Å2
Dissociation area: 1,400.92 Å2
Dissociation energy (ΔGdiss): 20.02 kcal/mol
Dissociation entropy (TΔSdiss): 12.41 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-107462

Macromolecules

Phosphopantetheine adenylyltransferase
Chains: A, B, C, D, E, F
Length: 173 amino acids
Theoretical weight: 19.18 KDa
Source organism: Enterobacter sp. 638
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: A4W515 (Residues: 1-159; Coverage: 100%)
Gene names: Ent638_0105, coaD
Pfam: Cytidylyltransferase-like
Phosphopantetheine adenylyltransferase in PDB entry 8zn2, assembly 2, front view.
Phosphopantetheine adenylyltransferase in PDB entry 8zn2, assembly 2, side view.
Phosphopantetheine adenylyltransferase in PDB entry 8zn2, assembly 2, top view.
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