Structure of beta-lactam synthetase reveals how to synthesize antibiotics instead of asparagine.
Miller, M.T., Bachmann, B.O., Townsend, C.A., Rosenzweig, A.C.(2001) Nat Struct Biol 8: 684-689
- PubMed: 11473258 
- DOI: 10.1038/90394
- Primary Citation of Related Structures:  
1JGT - PubMed Abstract: 
The enzyme beta-lactam synthetase (beta-LS) catalyzes the formation of the beta-lactam ring in clavulanic acid, a clinically important beta-lactamase inhibitor. Whereas the penicillin beta-lactam ring is generated by isopenicillin N synthase (IPNS) in the presence of ferrous ion and dioxygen, beta-LS uses ATP and Mg2+ as cofactors ...