X-ray diffraction
1.5Å resolution

MppA Periplasmic Murein Tripeptide Binding Protein, Unliganded Open Form

Source organism: Escherichia coli K-12
Entry authors: Jeffery CJ, Bhatt F

Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Periplasmic murein peptide-binding protein Chains: A, B
Molecule details ›
Chains: A, B
Length: 523 amino acids
Theoretical weight: 58.74 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
  • Canonical: P77348 (Residues: 23-537; Coverage: 100%)
Gene names: JW1322, b1329, mppA, ynaH
Sequence domains: Bacterial extracellular solute-binding proteins, family 5 Middle
Structure domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID
Spacegroup: P21
Unit cell:
a: 74.97Å b: 76.81Å c: 89.57Å
α: 90° β: 91.58° γ: 90°
R R work R free
0.18 0.18 0.206
Expression system: Escherichia coli