3mzf

X-ray diffraction
1.5Å resolution

Structure of penicillin-binding protein 5 from E. coli: imipenem acyl-enzyme complex

Released:

Function and Biology Details

Reactions catalysed:
Preferential cleavage: (Ac)(2)-L-Lys-D-Ala-|-D-Ala. Also transpeptidation of peptidyl-alanyl moieties that are N-acyl substituents of D-alanine.
A beta-lactam + H(2)O = a substituted beta-amino acid
Biochemical function:
Biological process:

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-142428 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
D-alanyl-D-alanine carboxypeptidase DacA Chain: A
Molecule details ›
Chain: A
Length: 363 amino acids
Theoretical weight: 39.84 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P0AEB2 (Residues: 30-392; Coverage: 97%)
Gene names: JW0627, b0632, dacA, pfv
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID
Spacegroup: C2
Unit cell:
a: 109.78Å b: 50.35Å c: 84.29Å
α: 90° β: 120.16° γ: 90°
R-values:
R R work R free
0.189 0.188 0.212
Expression system: Escherichia coli