Identification of networks perturbed by isobutanol and butanol toxicity

Mark P. Brynildsen, James C. Liao

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Isobutanol and butanol have received attention recently as renewable resource fuel alternatives (1-3). However, toxicity is a main concern for these biofuels, with native butanol producing strains (Clostridium acetobutylicum) being unable to grow at concentrations of 1.5% vol/vol (4). The deleterious effects of alcohols have mainly been attributed to disruption of the membrane, but recent work suggests that toxicity is much more complex (5-7). To understand isobutanol and butanol toxicity we have applied an approach that integrates transcriptomic, metabolic, protein, and phenotypic data to identify networks in Escherichia coli perturbed by isobutanol and/or butanol. By the use of DNA microarray, gene knockouts, phenotypic experiments, protein and metabolic data, and bioinformatics techniques including Network Component Analysis we have characterized the isobutanol and butanol response networks of E. coli. Escherichia coli was chosen as our model organism instead Clostridium strains due to similar growth toxicity (unable to grow at concentrations of 1% vol/vol), the degree to which the transcription, metabolic, and protein-protein interaction networks of E. coli have been identified, and the potential of E. coli to be used as a host strain for biofuel production.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
StatePublished - 2008
Externally publishedYes
Event236th National Meeting and Exposition of the American Chemical Society, ACS 2008 - Philadelpia, PA, United States
Duration: Aug 17 2008Aug 21 2008

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727


Other236th National Meeting and Exposition of the American Chemical Society, ACS 2008
Country/TerritoryUnited States
CityPhiladelpia, PA

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering


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