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@PHDTHESIS{Wahl:1253,
author = {Wahl, Sebastian Aljoscha},
title = {{M}ethoden zur integrierten {A}nalyse metabolischer
{N}etzwerke unter stationären und instationären
{B}edingungen},
volume = {1},
school = {Universität Siegen},
type = {Dr. (Univ.)},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {PreJuSER-1253},
isbn = {978-3-89336-506-7},
series = {Schriften des Forschungszentrums Jülich. Reihe Gesundheit
/ Health},
year = {2008},
note = {Record converted from VDB: 12.11.2012; Universität Siegen,
Diss., 2007},
abstract = {In biological organisms a variety of enzyme catalyzed
reactions are taking place that deliver energy as well as
precursors for biomass and products . These reactions are
modeled by metabolic networks . The simulation and analysis
of these networks is getting more important especially for
„Metabolic Engineering" approaches. Current models are
very detailed and nowadays can only be handled with computer
techniques. Metabolic analyses are performed under different
experimental conditions depending an the aim of the studies.
Firstly metabolic stationary conditions are applied to
quantify metabolic fluxes under e .g . production
conditions. Secondly non-stationary conditions that aim at a
kinetic characterization of the metabolic interactions .
Kinetic models can in contrast to stationary fluxes be used
for prediction of further states. The modeling approaches
differ depending an the available measurements. In
literature up to now there is no systematic approach that
could be applied to the different conditions . Nevertheless
there are several overlaps and the approaches are based an
the same chemical and physical laws. In Gase of stationary
metabolic analyses relatively simple linear equation systems
are used . There are a variety of methods for analysis
available . Nevertheless, these theoretical concepts are
often not applied for the interpretation of measured data.
In the presented work a method is developed that enables to
use a theoretic method for the interpretation of a measured
flux distribution. Kinetic models are muck more evolved .
The information needed for modeling is only partly available
and sometimes even contradictorily. Therefore in this work a
concept was developed that enables to extract hypotheses an
reaction mechanisms from measured time-series data. Based an
these hypotheses a variety of possible models are set up and
fitted to the data . It was observed that several models are
able to reproduce the measured data. Fortunately these
models share common characteristics that seem to be
essential for the correct reproduction of the data. Several
approaches are discussed how the identiflcation of kinetic
parameters can be improved . It is shown that the
simultaneous evaluation of experiments with two genetically
different strains does improve the statistical accuracy.
From a simulative study it is derived that an additional
labeling pulse will further increase the statistical
accuracy up to a factor of ten .},
cin = {IBT-2},
ddc = {610},
cid = {I:(DE-Juel1)VDB56},
pnm = {Biotechnologie},
pid = {G:(DE-Juel1)FUEK410},
typ = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
url = {https://juser.fz-juelich.de/record/1253},
}