Overexpression of transport proteins improves the production of 5-aminovalerate from l-lysine in Escherichia coli

Sci Rep. 2016 Aug 11:6:30884. doi: 10.1038/srep30884.

Abstract

Bacterial transporters mediate the exchanges between intracellular and extracellular environments. Modification of transport route could be applied to speed up the metabolic reactions and promote the production of aimed compounds. Herein, lysine 2-monooxygenase (DavB) and δ-aminovaleramidase (DavA) were co-expressed in Escherichia coli BL21(DE3) to produce nylon-5 monomer 5-aminovalerate from l-lysine. Then, PP2911 (4-aminobutyrate transporter in Pseudomonas putida) and LysP (the lysine specific permease in E. coli) were overexpressed to promote 5-aminovalerate production using whole cells of recombinant E. coli. The constructed E. coli strain overexpressing transport proteins exhibited good 5-aminovalerate production performance and might serve as a promising biocatalyst for 5-aminovalerate production from l-lysine. This strategy not only shows an efficient process for the production of nylon monomers but also might be used in production of other chemicals.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Transport Systems / genetics
  • Amino Acid Transport Systems / metabolism
  • Amino Acids, Neutral / metabolism*
  • Bacterial Proteins / genetics
  • Bacterial Proteins / metabolism
  • Carrier Proteins / genetics
  • Carrier Proteins / metabolism*
  • Escherichia coli / genetics*
  • Escherichia coli / metabolism
  • Lysine / metabolism*
  • Metabolic Engineering
  • Mixed Function Oxygenases / genetics
  • Mixed Function Oxygenases / metabolism
  • Pseudomonas putida / enzymology
  • Recombinant Proteins / metabolism

Substances

  • Amino Acid Transport Systems
  • Amino Acids, Neutral
  • Bacterial Proteins
  • Carrier Proteins
  • Recombinant Proteins
  • 5-aminovaleric acid
  • Mixed Function Oxygenases
  • lysine monooxygenase
  • Lysine