Expertise

Research:

  • Microbial Caffeine Metabolism
    1. Metabolic engineering of E. coli to produce high-value chemicals from caffeine.
    2. Elucidating the structure of caffeine-degrading enzymes from Pseudomonas putida CBB5.
    3. Understanding the microbial genetics of caffeine metabolism.
    4. Engineering  the yeast Saccharomyces cerevisiae to degrade caffeine.
  • Probiotic Bacteria
  • Riboswitches
  • Synthetic Biology to Enable Metabolic Engineering

Areas of Research:

  • Metabolic Engineering
  • Synthetic Biology
  • Biochemical Engineering for Production of Chemicals
  • Fuels
  • Pharmaceuticals

The Summers’ lab is working to metabolically engineer bacteria and yeast cells to produce chemicals, fuels, and pharmaceuticals. Specifically, the group focuses on engineering enzymes, gene networks, and genetic regulatory elements in microbial cells.

The group is also working to determine the structures of caffeine‐degrading enzymes in bacteria using X‐ray crystallography.

Other projects in the Summers’ lab include metabolic engineering of probiotic bacteria for in situ delivery of amino acids, characterization of genetic regulatory elements in probiotic bacteria, design of modular plasmids for metabolic engineering of E. coli, Saccharomyces cerevisiae, and other microbial strains, and construction of novel riboswitches that recognize small molecules.

Communities
Biotechnology, Chemical Engineering
Degrees
MS, University of Iowa, Chemical and Biological Engineering, 2011
PhD, University of Iowa, Chemical and Biochemical Engineering, 2011
BS, Utah State University, Biological Engineering, 2008
MS, Utah State University, Chemical and Biochemical Engineering, 2008
Keywords
caffeine biochemical engineering biotechnology natural products gene cloning gene regulation gene expression metabolic engineering protein structure protein engineering industrial microbiology molecular microbiology environmental microbiology synthetic biology riboswitches probiotics aptamers protein purification
Languages
English, Spanish
Associations
American Institute of Chemical Engineers
American Society for Engineering Education
American Society for Microbiology
Institute of Biological Engineering