Multiple Assemblies exist for SMTL entry 4ibr
Crystal structure of stabilized TEM-1 beta-lactamase variant v.13 carrying G238S/E104K mutations; X-RAY DIFFRACTION 2.20 Å

SMTL ID
4ibr.1
Ligands
CALCIUM ION; 2-(N-MORPHOLINO)-ETHANESULFONIC ACID
Polypeptides
TEM-94 ES-beta-lactamase
Oligo-state
monomer
SMTL ID
4ibr.2
Ligands
CALCIUM ION; 2-(N-MORPHOLINO)-ETHANESULFONIC ACID
Polypeptides
TEM-94 ES-beta-lactamase
Oligo-state
homo-dimer