5hlb

X-ray diffraction
2.42Å resolution

E. coli PBP1b in complex with acyl-aztreonam and moenomycin

Released:

Function and Biology Details

Reactions catalysed:
(GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala))(n)-diphosphoundecaprenol + GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol = (GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala))(n+1)-diphosphoundecaprenol + undecaprenyl diphosphate
Preferential cleavage: (Ac)(2)-L-Lys-D-Ala-|-D-Ala. Also transpeptidation of peptidyl-alanyl moieties that are N-acyl substituents of D-alanine.
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
PDBe Complex ID:
PDB-CPX-136379 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Penicillin-binding protein 1B Chain: A
Molecule details ›
Chain: A
Length: 747 amino acids
Theoretical weight: 83.28 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P02919 (Residues: 58-804; Coverage: 89%)
Gene names: JW0145, b0149, mrcB, pbpF, ponB
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CLSI BEAMLINE 08ID-1
Unit cell:
a: 62.53Å b: 64.39Å c: 301.4Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.226 0.225 0.243
Expression system: Escherichia coli