PlumX Metrics
Embed PlumX Metrics

Metabolic flux analysis of the sterol pathway in the yeast Saccharomyces cerevisiae

Bioprocess and Biosystems Engineering, ISSN: 1615-7591, Vol: 29, Issue: 4, Page: 241-252
2006
  • 21
    Citations
  • 0
    Usage
  • 63
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Article Description

The yeast Saccharomyces cerevisiae is a useful model system for examining the biosynthesis of sterols in eukaryotic cells. To investigate underlying regulation mechanisms, a flux analysis of the ergosterol pathway was performed. A stoichiometric model was derived based on well known biochemistry of the pathway. The model was integrated in the Software COMPFlux which uses a global optimization algorithm for the estimation of intracellular fluxes. Sterol concentration patterns were determined by gas chromatography in aerobic and anaerobic batch cultivations, when the sterol metabolism was suppressed due to the absence of oxygen. In addition, the sterol concentrations were observed in a cultivation which was shifted from anaerobic to aerobic growth conditions causing the sterol pools in the cell to be filled. From time-dependent flux patterns, possible limitations in the pathway could be localized and the esterification of sterols was identified as an integral part of regulation in ergosterol biosynthesis. © Springer-Verlag 2006.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know