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FEBS Lett. 2013 Sep 2;587(17):2832-41. doi: 10.1016/j.febslet.2013.06.043. Epub 2013 Jul 4.

A model of yeast glycolysis based on a consistent kinetic characterisation of all its enzymes.

Author information

  • 1Manchester Centre for Integrative Systems Biology, Manchester Institute of Biotechnology, The University of Manchester, UK.

Abstract

We present an experimental and computational pipeline for the generation of kinetic models of metabolism, and demonstrate its application to glycolysis in Saccharomyces cerevisiae. Starting from an approximate mathematical model, we employ a "cycle of knowledge" strategy, identifying the steps with most control over flux. Kinetic parameters of the individual isoenzymes within these steps are measured experimentally under a standardised set of conditions. Experimental strategies are applied to establish a set of in vivo concentrations for isoenzymes and metabolites. The data are integrated into a mathematical model that is used to predict a new set of metabolite concentrations and reevaluate the control properties of the system. This bottom-up modelling study reveals that control over the metabolic network most directly involved in yeast glycolysis is more widely distributed than previously thought.

Copyright © 2013 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

KEYWORDS:

Enzyme kinetic; Glycolysis; Isoenzyme; Modelling; Systems biology

PMID:
23831062
[PubMed - indexed for MEDLINE]
PMCID:
PMC3764422
Free PMC Article
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