Figure 1.
Functional flux mode for the synthesis of glycocholate. Flux distribution obtained for canalicular glycocholate as target flux using the minimal exchange set. Metabolites are labeled and color coded according to their sub-cellular localization (s, sinusoidal; c, cytosol; r, endoplasmic reticulum; m, mitochondrion; b, bile). All internal metabolites are balanced, including cofactors, which may appear in several instances in the graph. Reaction arrows correspond to flux direction and magnitude predicted by TR-FBA and reaction identifiers are indicated. The flux graph was created with the program CytoScape (Shannon et al, 2003; Killcoyne et al, 2009) and our own CytoScape plug-in FluxViz (König and Holzhütter, 2010).