Míguez DG, Vanag VK, Epstein IR. Fronts and pulses in an enzymatic reaction catalyzed by glucose oxidase.
Proc Natl Acad Sci U S A 2007;
104:6992-7. [PMID:
17420460 PMCID:
PMC1855356 DOI:
10.1073/pnas.0611438104]
[Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Indexed: 11/18/2022] Open
Abstract
Waves and patterns in living systems are often driven by biochemical reactions with enzymes as catalysts and regulators. We present a reaction-diffusion system catalyzed by the enzyme glucose oxidase that exhibits traveling wave patterns in a spatially extended medium. Fronts and pulses propagate as a result of the coupling between the enzyme-catalyzed autocatalytic production and diffusion of hydrogen ions. A mathematical model qualitatively explains the experimental observations.
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