Characterizing Strain Variation in Engineered E. coli Using a Multi-Omics-Based Workflow

Elizabeth Brunk, Kevin W George, Jorge Alonso-Gutierrez, Mitchell Thompson, Edward Baidoo, George Wang, Christopher J Petzold, Douglas McCloskey, Jonathan Monk, Laurence Yang, Edward J O'Brien, Tanveer S Batth, Hector Garcia Martin, Adam Feist, Paul D Adams, Jay D Keasling, Bernhard O Palsson, Taek Soon Lee

    50 Citations (Scopus)

    Abstract

    Understanding the complex interactions that occur between heterologous and native biochemical pathways represents a major challenge in metabolic engineering and synthetic biology. We present a workflow that integrates metabolomics, proteomics, and genome-scale models of Escherichia coli metabolism to study the effects of introducing a heterologous pathway into a microbial host. This workflow incorporates complementary approaches from computational systems biology, metabolic engineering, and synthetic biology; provides molecular insight into how the host organism microenvironment changes due to pathway engineering; and demonstrates how biological mechanisms underlying strain variation can be exploited as an engineering strategy to increase product yield. As a proof of concept, we present the analysis of eight engineered strains producing three biofuels: isopentenol, limonene, and bisabolene. Application of this workflow identified the roles of candidate genes, pathways, and biochemical reactions in observed experimental phenomena and facilitated the construction of a mutant strain with improved productivity. The contributed workflow is available as an open-source tool in the form of iPython notebooks.

    Original languageEnglish
    JournalCell Systems
    Volume2
    Issue number5
    Pages (from-to)335-46
    Number of pages12
    ISSN2405-4712
    DOIs
    Publication statusPublished - 25 May 2016

    Fingerprint

    Dive into the research topics of 'Characterizing Strain Variation in Engineered E. coli Using a Multi-Omics-Based Workflow'. Together they form a unique fingerprint.

    Cite this