Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s00253-010-2957-9
Volltext Shareable Link
Titel (primär) Overexpression of alpha-ketoglutarate dehydrogenase in Yarrowia lipolytica and its effect on production of organic acids
Autor Holz, M.; Otto, C.; Kretschmar, A.; Yovkova, V.; Aurich, A.; Pötter, M.; Marx, A.; Barth, G.
Quelle Applied Microbiology and Biotechnology
Erscheinungsjahr 2011
Department UBZ
Band/Volume 89
Heft 5
Seite von 1519
Seite bis 1526
Sprache englisch
Keywords Alpha-ketoglutarate dehydrogenase; Alpha-ketoglutaric acid; Pyruvic acid; Isocitric acid; Citric acid; Yarrowia lipolytica
Abstract The yeast Yarrowia lipolytica is one of the most intensively studied "non-conventional" yeast species. Its ability to secrete various organic acids, like pyruvic (PA), citric, isocitric, and alpha-ketoglutaric (KGA) acid, in large amounts is of interest for biotechnological applications. We have studied the effect of the alpha-ketoglutarate dehydrogenase (KGDH) complex on the production process of KGA. Being well studied in Saccharomyces cerevisiae this enzyme complex consists of three subunits: alpha-ketoglutarate dehydrogenase, dihydrolipoyl transsuccinylase, and lipoamide dehydrogenase. Here we report the effect of overexpression of these subunits encoding genes and resulting increase of specific KGDH activity on organic acid production under several conditions of growth limitation and an excess of carbon source in Y. lipolytica. The constructed strain containing multiple copies of all three KGDH genes showed a reduced production of KGA and an elevated production of PA under conditions of KGA production. However, an increased activity of the KGDH complex had no influence on organic acid production under citric acid production conditions.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10771
Holz, M., Otto, C., Kretschmar, A., Yovkova, V., Aurich, A., Pötter, M., Marx, A., Barth, G. (2011):
Overexpression of alpha-ketoglutarate dehydrogenase in Yarrowia lipolytica and its effect on production of organic acids
Appl. Microbiol. Biotechnol. 89 (5), 1519 - 1526 10.1007/s00253-010-2957-9