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Journal Article

Enhanced diffusion of enzymes that catalyze exothermic reactions

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Golestanian,  Ramin       
Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Golestanian, R. (2015). Enhanced diffusion of enzymes that catalyze exothermic reactions. Physical Review Letters, 115(10): 108102. doi:10.1103/PhysRevLett.115.108102.


Cite as: https://hdl.handle.net/21.11116/0000-0001-762C-A
Abstract
Enzymes have been recently found to exhibit enhanced diffusion due to their catalytic activities. A recent experiment [C. Riedel et al., Nature (London) 517, 227 (2015)] has found evidence that suggests this phenomenon might be controlled by the degree of exothermicity of the catalytic reaction involved. Four mechanisms that can lead to this effect, namely, self-thermophoresis, boost in kinetic energy, stochastic swimming, and collective heating are critically discussed, and it is shown that only the last two can be strong enough to account for the observations. The resulting quantitative description is used to examine the biological significance of the effect. © 2015 American Physical Society.