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The structure of the Escherichia coli murein tripeptide binding protein MppA

X-ray diffraction
2.07Å resolution
PDB entry 3o9p coloured by chain, front view.
PDB entry 3o9p coloured by chain, side view.
PDB entry 3o9p coloured by chain, top view.
Source organism: Escherichia coli
Assemblies composition:
monomeric (preferred)
homo hexamer
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Periplasmic murein peptide-binding protein MppA
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Multimeric state: monomeric
Accessible surface area: 20264.74 Å2
Buried surface area: 342.57 Å2
Dissociation area: 38.03 Å2
Dissociation energy (ΔGdiss): 18 kcal/mol
Dissociation entropy (TΔSdiss): -0.21 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-160155
Assembly 2
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Assembly Name: Periplasmic murein peptide-binding protein MppA
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Multimeric state: homo hexamer
Accessible surface area: 115199.53 Å2
Buried surface area: 8420.96 Å2
Dissociation area: 3,169.41 Å2
Dissociation energy (ΔGdiss): 147.66 kcal/mol
Dissociation entropy (TΔSdiss): 75.61 kcal/mol
Symmetry number: 6
PDBe Complex ID: PDB-CPX-160156

Macromolecules

Periplasmic murein peptide-binding protein MppA
Chain: A
Length: 519 amino acids
Theoretical weight: 58.04 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: P77348 (Residues: 23-537; Coverage: 100%)
Gene names: JW1322, b1329, mppA, ynaH
Pfam: Bacterial extracellular solute-binding proteins, family 5 Middle
InterPro:
CATH:
Periplasmic murein peptide-binding protein in PDB entry 3o9p, assembly 1, front view.
Periplasmic murein peptide-binding protein in PDB entry 3o9p, assembly 1, side view.
Periplasmic murein peptide-binding protein in PDB entry 3o9p, assembly 1, top view.
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