Enhancement of diffusion-controlled reaction rates by surface-induced orientational restriction.

Biophys J

Department of Chemistry, James Franck Institute, Institute for Biophysical Dynamics, and Committee on Immunology, The University of Chicago, Chicago, Illinois, USA.

Published: February 2006

We explore the means by which immobilization of a substrate on a surface can increase the rate of a diffusion-controlled enzymatic reaction. A quasichemical approach is developed and compared with Brownian dynamics simulations. We use these methods to show that restricting only the orientation of the enzyme by long-range interactions with the surface is sufficient for enhancing catalysis.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1367114PMC
http://dx.doi.org/10.1529/biophysj.105.072785DOI Listing

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