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Title: Towards patterned bioelectronics: facilitated immobilization of exoelectrogenic Escherichia coli with heterologous pili

Journal Article · · Microbial Biotechnology (Online)
ORCiD logo [1];  [2];  [3];  [1];  [1];  [4];  [1]
  1. VTT Technical Research Centre of Finland Ltd Espoo Finland
  2. Department of Biochemistry and Molecular Biology Michigan State University East Lansing MI USA, The Molecular Foundry Lawrence Berkeley National Laboratory Molecular Biophysics and Integrated Bioimaging Division Synthetic Biology Institute Berkeley CA USA
  3. VTT Technical Research Centre of Finland Ltd Espoo Finland, Current affiliation: Solar Foods Ltd Helsinki Finland
  4. The Molecular Foundry Lawrence Berkeley National Laboratory Molecular Biophysics and Integrated Bioimaging Division Synthetic Biology Institute Berkeley CA USA

Summary Biosensors detect signals using biological sensing components such as redox enzymes and biological cells. Although cellular versatility can be beneficial for different applications, limited stability and efficiency in signal transduction at electrode surfaces represent a challenge. Recent studies have shown that the Mtr electron conduit from Shewanella oneidensis MR ‐1 can be produced in Escherichia coli to generate an exoelectrogenic model system with well‐characterized genetic tools. However, means to specifically immobilize this organism at solid substrates as electroactive biofilms have not been tested previously. Here, we show that mannose‐binding Fim pili can be produced in exoelectrogenic E. coli and can be used to selectively attach cells to a mannose‐coated material. Importantly, cells expressing fim genes retained current production by the heterologous Mtr electron conduit. Our results demonstrate the versatility of the exoelectrogenic E. coli system and motivate future work that aims to produce patterned biofilms for bioelectronic devices that can respond to various biochemical signals.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Office of Naval Research (ONR) (United States); The Finnish Funding Agency for Technology and Innovation (Tekes) (Finland); Academy of Finland
Grant/Contract Number:
287011; DE‐AC02‐05CH11231; AC02-05CH11231; N000141310551; 2299/31/2012; 40044/13; 277121; 272569
OSTI ID:
1471141
Alternate ID(s):
OSTI ID: 1472156; OSTI ID: 1483273
Journal Information:
Microbial Biotechnology (Online), Journal Name: Microbial Biotechnology (Online) Vol. 11 Journal Issue: 6; ISSN 1751-7915
Publisher:
Wiley-BlackwellCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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