Abstract
Stereoelectronic complementarity between the active site of an enzyme and the transition state of a reaction is one of the tenets of enzyme catalysis. This report illustrates the principles of enzyme catalysis (first proposed by Pauling and Jencks) through a well-defined model system that has been fully characterized crystallographically, computationally and kinetically. Catalysis of the bowl-to-bowl inversion processes that pertain to corannulene is achieved by combining ground-state destabilization and transition-state stabilization within the cavity of an extended tetracationic cyclophane. This synthetic receptor fulfils a role reminiscent of a catalytic antibody by stabilizing the planar transition state for the bowl-to-bowl inversion of (ethyl)corannulene (which accelerates this process by a factor of ten at room temperature) by an induced-fit mechanism first formulated by Koshland.
Original language | English (US) |
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Pages (from-to) | 222-228 |
Number of pages | 7 |
Journal | Nature chemistry |
Volume | 6 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2014 |
Funding
The authors thank M. Stuparu for synthesizing bromocorannulene and C. L. Stern for performing the X-ray crystallographic analysis. This research is part of the Joint Center of Excellence in Integrated Nano-Systems (JCIN) at King Abdul-Aziz City for Science and Technology (KACST) and Northwestern University (NU) (Project 34-947). The authors would like to thank both KACST and NU for their continued support of this research. We also acknowledge support from the World Class University Program (R-31-2008-000-10055-0) in Korea. M.J. gratefully acknowledges The Netherlands Organisation for Scientific Research and the Marie Curie Cofund Action (Rubicon Fellowship). N.L.S. and E.J.D. are supported by a Graduate Research Fellowship from the National Science Foundation. J.C.B. is supported by a National Defense Science and Engineering Graduate Fellowship from the Department of Defense and gratefully acknowledges receipt of a Ryan Fellowship from the NU International Institute for Nanotechnology. K.K.B. and J.S.S. gratefully acknowledge the Swiss National Science Foundation, the Qian Ren Scholar Program of China and the Synergetic Innovation Center of Chemical Science and Engineering (Tianjin).
ASJC Scopus subject areas
- General Chemical Engineering
- General Chemistry
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CCDC 950390: Experimental Crystal Structure Determination
Juríček, M. (Creator), Strutt, N. L. (Creator), Barnes, J. C. (Creator), Butterfield, A. M. (Creator), Dale, E. J. (Creator), Baldridge, K. K. (Creator), Stoddart, J. F. (Creator) & Siegel, J. S. (Creator), Cambridge Crystallographic Data Centre, 2014
DOI: 10.5517/cc10wyrl, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc10wyrl&sid=DataCite
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