1GHM Structures of the acyl-enzyme complex of the staphylococcus aureus beta-lactamase mutant GLU166ASP:ASN170GLN with degraded cephaloridine Staphylococcus aureus 3SH8 Crystal structure of fluorophore-labeled beta-lactamase PenP in complex with cephaloridine Bacillus licheniformis 4N9K crystal structure of beta-lactamse PenP_E166S in complex with cephaloridine Bacillus licheniformis 5GHY Crystal structure of beta-lactamase PenP mutant-E166H in complex with cephaloridine as "post-acylation" intermediate Bacillus licheniformis 5GHZ Crystal structure of beta-lactamase PenP mutant-E166H in complex with cephaloridine as "pre-deacylation" intermediate Bacillus licheniformis 5ZFT Crystal structure of beta-lactamase PenP mutant-E166Y in complex with cephaloridine as "pre-deacylation" intermediate Bacillus licheniformis 5ZG6 Crystal structure of beta-lactamase PenP mutant-E166Y in complex with cephaloridine as "post-acylation" intermediate Bacillus licheniformis