Effects of carnitine acetyltransferase gene knockout on long chain dicarboxylic acid production and metabolism of Candida tropicalis

Hong Gao, Jian Zhang, Yu tao Hua, Chun Li, Zhu an Cao

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3 Citations (Scopus)


Candida tropicalis can assimilate n-alkane as a sole carbon source and produce dicarboxylic acids (DCAs). The synthesis of DCAs is thought to be reduced by beta-oxidation. Carnitine acetyltransferase (CAT) is the major enzyme to transfer DCAs into beta-oxidative pathway, then DCAs would be catalyzed to generate ATP to supply cells with energy. A homologous recombination plasmid was constructed, in which CAT gene was disrupted by inserting hygromycin B resistance gene. This plasmid was used to transform Candida tropicalis wild type strain F10-1, and one single CAT gene knockout strain was obtained. Comparing with the wild type, the recombinant increased DCA13 yield and molar conversion of alkane by 13.0% and 11.8%, respectively, and decreased unnecessary consumption of DCAs in beta-oxidation.

Original languageChinese (Simplified)
Pages (from-to)102-105
Number of pages4
JournalWei sheng wu xue bao = Acta microbiologica Sinica
Issue number1
Publication statusPublished - 1 Feb 2005

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