Fig. 2
Topology of the metabolic network. a Coarse-grained model of the metabolic network. Group A carbon sources merge to a common node M before reaching precursor pools. Group B sources can supply some precursor pools from other routes. b Topology of the part of the metabolic network connecting two carbon sources to a precursor pool. The two carbon sources X and Y (from Group A and/or Group B) reach a common node M through multiple intermediate nodes (metabolites) \(m_X^j\) and \(m_Y^j\) along their respective pathway, after which the flux is diverted to Pool z
