| 1FR1: reference: Refined crystal structure of beta-lactamase from Citrobacter freundii indicates a mechanism for beta-lactam hydrolysis., Oefner C, D'Arcy A, Daly JJ, Gubernator K, Charnas RL, Heinze I, Hubschwerlen C, Winkler FK, Nature 1990 Jan 18;343(6255):284-8. PMID: 2300174 |
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