Engineering a Dirhodium Artificial Metalloenzyme for Selective Olefin Cyclopropanation Srivastava, P.; Yang, H.; Ellis-Guardiola, K.; Lewis, J. C.* Engineering a Dirhodium Artificial Metalloenzyme for Selective Olefin Cyclopropanation. Nat. Commun. 2015, 6, 7789.