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Production of 5-aminovaleric and glutaric acid by metabolically engineered microorganism
Date:12/20/2012

We use many different types of chemicals and plastics for the convenience of our everyday life. The current sources of these materials are provided from petrochemical industry, using fossil oil as a raw material. Due to our increased concerns on the environmental problems and fossil resource availability, there has been much interest in producing those chemicals and materials from renewable non-food biomass through biorefineries. For the development of biorefinery process, microorganisms have successfully been employed as the key biocatalysts to produce a wide range of chemicals, plastics, and fuels from renewable resources. However, the natural microorganisms without modification are not suitable for the efficient production of target products at industrial scale due to their poor metabolic performance. Thus, metabolic capacities of microorganisms have been improved to efficiently produce desired products, the performance of which is suitable for industrial production of such products. Optimization of microorganism for the efficient production of target bioproducts has been achieved by systems metabolic engineering, which allows metabolic engineering at the systems-level.

5-aminovalic acid (5AVA) is the precursor of valerolactam, a potential building block for producing nylon 5, and can potentially be used as a C5 platform chemical for synthesizing 5-hydroxyvaleric acid, glutaric acid, and 1,5-pentanediol. It has been reported that a small amount of 5AVA is accumulated in Pseudomonas putida that has impaired L-lysine catabolism since 5AVA is a natural metabolite of L-lysine catabolism in P. putida. However, direct fermentative production of 5AVA has not yet been demonstrated, which might have great potential to open market for C5 chemicals and plastics.

In the paper published in Metabolic Engineering, a Korean research team led by Distinguished Pr
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Contact: Lan Yoon
hlyoon@kaist.ac.kr
82-423-502-295
The Korea Advanced Institute of Science and Technology (KAIST)
Source:Eurekalert

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