4E3L:
reference: Fragment-guided design of subnanomolar beta-lactamase inhibitors active in vivo., Eidam O, Romagnoli C, Dalmasso G, Barelier S, Caselli E, Bonnet R, Shoichet BK, Prati F, Proc Natl Acad Sci U S A. 2012 Oct 23;109(43):17448-53. doi:, 10.1073/pnas.1208337109. Epub 2012 Oct 5. PMID: 23043117

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