Metabolic engineering of Corynebacterium glutamicum for the production of glutaric acid, a C5 dicarboxylic acid platform chemical

  • Hee Taek Kim
  • , Tae Uk Khang
  • , Kei Anne Baritugo
  • , Sung Min Hyun
  • , Kyoung Hee Kang
  • , Sol Hee Jung
  • , Bong Keun Song
  • , Kyungmoon Park
  • , Min Kyu Oh
  • , Gi Bae Kim
  • , Hyun Uk Kim
  • , Sang Yup Lee
  • , Si Jae Park
  • , Jeong Chan Joo

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Corynebacterium glutamicum was metabolically engineered for the production of glutaric acid, a C5 dicarboxylic acid that can be used as platform building block chemical for nylons and plasticizers. C. glutamicum gabT and gabD genes and Pseudomonas putida davT and davD genes encoding 5-aminovalerate transaminase and glutarate semialdehyde dehydrogenase, respectively, were examined in C. glutamicum for the construction of a glutaric acid biosynthesis pathway along with P. putida davB and davA genes encoding lysine 2-monooxygenase and delta-aminovaleramidase, respectively. The glutaric acid biosynthesis pathway constructed in recombinant C. glutamicum was engineered by examining strong synthetic promoters PH30 and PH36, C. glutamicum codon-optimized davTDBA genes, and modification of davB gene with an N-terminal His6-tag to improve the production of glutaric acid. It was found that use of N-terminal His6-tagged DavB was most suitable for the production of glutaric acid from glucose. Fed-batch fermentation using the final engineered C. glutamicum H30_GAHis strain, expressing davTDA genes along with davB fused with His6-tag at N-terminus could produce 24.5 g/L of glutaric acid with low accumulation of L-lysine (1.7 g/L), wherein 5-AVA accumulation was not observed during fermentation.

Original languageEnglish
Pages (from-to)99-109
Number of pages11
JournalMetabolic Engineering
Volume51
DOIs
StatePublished - Jan 2019

Bibliographical note

Funding Information:
This work was supported by the Mid-career Researcher Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science and ICT (MSIT) ( NRF-2016R1A2B4008707 ), the Technology Development Program to Solve Climate Changes on Systems Metabolic Engineering for Biorefineries from MSIT through the NRF of Korea ( NRF-2015M1A2A2035810 ), the Bio & Medical Technology Development Program MSIT through the NRF of Korea ( NRF-2018M3A9H3020459 ) and the Lignin Biorefinery from MSIT through the NRF of Korea ( NRF-2017M1A2A2087634 ).

Publisher Copyright:
© 2018 International Metabolic Engineering Society

Keywords

  • Codon optimization
  • Corynebacterium glutamicum
  • davTDBA
  • Fed-batch fermentation
  • Glutaric acid
  • His-tag
  • L‐Lysine

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