Constitutive production of aconitate isomerase by Pseudomonas sp. WU-0701 in relation to trans-aconitic acid assimilation

Arisa Takiguchi, Isato Yoshioka, Yunosuke Oda, Yoshitaka Ishii, Kohtaro Kirimura

研究成果: Article査読

抄録

Aconitic acid, an unsaturated tricarboxylic acid, is used in the chemical industry as raw materials for organic synthesis, especially as a specific substrate for a flavoring agent. trans-Aconitic acid (tAA) is a trans-isomer of cis-aconitic acid and detected in some plants and bacteria. However, biosynthetic route and metabolism of tAA in relation to assimilation have been unknown. Aconitate isomerase (AI; EC 5.3.3.7) catalyzes the reversible isomerization between cis-aconitic acid and tAA. Pseudomonas sp. WU-0701 was isolated as a bacterium assimilating tAA as sole carbon source, and characterization and gene identification of AI were already reported. Here, we describe that Pseudomonas sp. WU-0701 exhibited growth in each synthetic medium containing glucose, citric acid, isocitric acid, or tAA as sole carbon source. AI was intracellularly detected all the time during the cultivation of the strain WU-0701 cells, irrespective of the carbon sources; AI activity was detected even in the glucose-grown cells. Through the subcellular fractionation experiments, AI was detected in the periplasmic fraction. This is the first report indicating that a bacterium belonging to the genus Pseudomonas is constitutive for the AI production.

本文言語English
ページ(範囲)47-52
ページ数6
ジャーナルJournal of Bioscience and Bioengineering
131
1
DOI
出版ステータスPublished - 2021 1

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

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