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izvor podataka: crosbi

Five step continuous production of PHB analyzed by elementary flux modes, yield space analysis and high structured metabolic model (CROSBI ID 194457)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Lopar, Markan ; Vrana Špoljarić, Ivna ; Atlić, Aid ; Koller, Martin ; Braunegg, Gerhart ; Horvat, Predrag Five step continuous production of PHB analyzed by elementary flux modes, yield space analysis and high structured metabolic model // Biochemical engineering journal, 79 (2013), 57-70. doi: 10.1016/j.bej.2013.07.003

Podaci o odgovornosti

Lopar, Markan ; Vrana Špoljarić, Ivna ; Atlić, Aid ; Koller, Martin ; Braunegg, Gerhart ; Horvat, Predrag

engleski

Five step continuous production of PHB analyzed by elementary flux modes, yield space analysis and high structured metabolic model

A high structured metabolic model for PHB synthesis by Cupriavidus necator DSM 545 consisting of 43 mass balance equations related to the same number of intracellular compounds was established. The metabolic state of cells cultivated in a continuously operated five stage bioreactor cascade was analyzed by help of elementary flux modes and two-dimensional yield space. Two different C-source feeding strategies were performed. Concerning PHB and biomass yields, values of the more efficient strategy were used as the data source for elementary modes and metabolic flux calculations, respectively. Metabolic fluxes were calculated from experimental yield data using a combination of elementary modes by applying the quadratic programming approach, in which the sum of squared weighting factors was minimized. Two different metabolic situations concerning activity of glucose-6-phosphate isomerase were tested. The high structured metabolic model was validated by comparison of experimental data from 24 h batch cultivation and simulated results.

Cupriavidus necator; elementary modes; high-structured mathematical model; metabolic fluxes; poly(3-hydroxybutyrate); yield space analysis

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Podaci o izdanju

79

2013.

57-70

objavljeno

1369-703X

10.1016/j.bej.2013.07.003

Povezanost rada

Biotehnologija

Poveznice
Indeksiranost