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Title: Proton mediated control of biochemical reactions with bioelectronic pH modulation

Journal Article · · Scientific Reports
DOI: https://doi.org/10.1038/srep24080 · OSTI ID:1253913
 [1];  [2];  [3];  [3];  [2]
  1. Univ. of Washington, Seattle, WA (United States); University of Washington
  2. Univ. of Washington, Seattle, WA (United States); Univ. of California, Santa Cruz, CA (United States)
  3. Univ. of Washington, Seattle, WA (United States)

In Nature, protons (H+) can mediate metabolic process through enzymatic reactions. Examples include glucose oxidation with glucose dehydrogenase to regulate blood glucose level, alcohol dissolution into carboxylic acid through alcohol dehydrogenase, and voltage-regulated H+ channels activating bioluminescence in firefly and jellyfish. Artificial devices that control H+ currents and H+ concentration (pH) are able to actively influence biochemical processes. Here, we demonstrate a biotransducer that monitors and actively regulates pH-responsive enzymatic reactions by monitoring and controlling the flow of H+ between PdHx contacts and solution. The present transducer records bistable pH modulation from an “enzymatic flip-flop” circuit that comprises glucose dehydrogenase and alcohol dehydrogenase. Furthermore, the transducer also controls bioluminescence from firefly luciferase by affecting solution pH.

Research Organization:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0010441
OSTI ID:
1253913
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (13)

Taking Electrons out of Bioelectronics: From Bioprotonic Transistors to Ion Channels journal March 2017
Endogenous Bioelectrics in Development, Cancer, and Regeneration: Drugs and Bioelectronic Devices as Electroceuticals for Regenerative Medicine journal December 2019
A protonic biotransducer controlling mitochondrial ATP synthesis journal July 2018
A non-enzymatic glucose sensor enabled by bioelectronic pH control journal July 2019
Soft and Ion‐Conducting Materials in Bioelectronics: From Conducting Polymers to Hydrogels journal January 2020
Taking Electrons out of Bioelectronics: From Bioprotonic Transistors to Ion Channels journal March 2017
A Bioelectronic Platform Modulates pH in Biologically Relevant Conditions journal January 2019
A protonic biotransducer controlling mitochondrial ATP synthesis journal July 2018
A non-enzymatic glucose sensor enabled by bioelectronic pH control journal July 2019
Bio-inspired protonic memristor devices based on metal complexes with proton-coupled electron transfer journal January 2019
Enhanced protonic conductivity and IFET behavior in individual proton-doped electrospun chitosan fibers journal January 2019
Proton Conductivity of Glycosaminoglycans journal August 2018
Proton conductivity of glycosaminoglycans journal March 2019

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