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. 2017 Oct 12;5:e3860. doi: 10.7717/peerj.3860

Figure 7. Internal cycles for non-optimal biomass production: example of sustainability and optimal-efficiency-PEMs that are not producibility-PEMs.

Figure 7

In the iJO1366 network, removing the reaction consuming Thiamin to produce Thiamin diphosphate allows the system to activate an internal cycle. This internal cycle involves components that cannot be activated from the set of seeds according to graph-based criteria.