PDBe 2v20

X-ray diffraction
1.67Å resolution

Structure of a TEM-1 beta-lactamase insertant allosterically regulated by kanamycin and anions. Complex with sulfate.

Released:

Function and Biology Details

Reaction catalysed:
A beta-lactam + H(2)O = a substituted beta-amino acid
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Beta-lactamase TEM Chain: A
Molecule details ›
Chain: A
Length: 291 amino acids
Theoretical weight: 32.45 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
UniProt:
  • Canonical: P62593 (Residues: 25-38, 41-286; Coverage: 99%)
Gene names: bla, blaT-3, blaT-4, blaT-5, blaT-6
Sequence domains: Beta-lactamase enzyme family
Structure domains: DD-peptidase/beta-lactamase superfamily

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: EMBL/DESY, HAMBURG BEAMLINE X12
Spacegroup: P212121
Unit cell:
a: 46.08Å b: 72.142Å c: 73.495Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.182 0.18 0.223
Expression system: Escherichia coli