Effect of redox potential on the growth of Yarrowia lipolytica and the biosynthesis and activity of heterologous hydroperoxide lyase
In: ISSN: 1381-1177, 2006
academicJournal
Zugriff:
International audience ; The aim of this study was to investigate the effect of redox potential (Eh) on the growth of the yeast Yarrowia lipoytica in both oxidizing (Eh = +350 mV) and reducing (Eh = - 150 mV) media and its effect on the expression and activity of hydroperoxide lyase (HPL). HPL activity was assayed in media with Eh values ranging from -250 to +720 mV. In order to change the Eh value of the media, reducing agents including dithiotreitol (1 g/L) and hydrogen (4%) as well as oxidants such as potassium ferricyanide (1 g/L) and oxygen (100%), were used. The experimental findings showed that oxidizing conditions, with Eh of +350 mV, were favorable for the growth of the yeast, whereas reducing conditions, with Eh values of - 150 mV, resulted in a higher expression of HPL. In addition, the results showed that the enzymatic activity of the purified HPL was enhanced in the presence of 0.5 mM dithiotreitol but decreased with I mM potassium ferricyanide and bubbling O-2. However, HPL activity increased 1.5 times in the presence of 4% hydrogen with an Eh value of - 170 rnV. (c) 2006 Elsevier B.V. All rights reserved.
Titel: |
Effect of redox potential on the growth of Yarrowia lipolytica and the biosynthesis and activity of heterologous hydroperoxide lyase
|
---|---|
Autor/in / Beteiligte Person: | Husson, Françoise ; Tu, Viêt Phu ; Santiago-Gómez, Mirna ; Cachon, Rémy ; Feron, Gilles ; Nicaud, Jean-Marc, J. M. ; Kermasha, Sélim ; Belin, Jean-Marc ; Microbiologie ; Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB) ; Centre des Sciences du Goût et de l'Alimentation Dijon (CSGA) ; Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) ; Microbiologie et Génétique Moléculaire (MGM) ; Institut National de la Recherche Agronomique (INRA)-Institut National Agronomique Paris-Grignon (INA P-G)-Centre National de la Recherche Scientifique (CNRS) ; McGill University = Université McGill Montréal, Canada |
Link: | |
Zeitschrift: | ISSN: 1381-1177, 2006 |
Veröffentlichung: | HAL CCSD ; Elsevier, 2006 |
Medientyp: | academicJournal |
DOI: | 10.1016/j.molcatb.2006.01.021 |
Schlagwort: |
|
Sonstiges: |
|