Figure 3From: Flux-sum analysis: a metabolite-centric approach for understanding the metabolic networkDead-ends and blocked metabolites. In a simple system involving metabolites A, B, C, D, E and F, metabolites D and E are pathway dead-ends. Reactions B → C, B → E and C → D are blocked reactions since metabolites D and E are neither consumed nor secreted. Consequently, metabolites C, D and E are blocked metabolites.Back to article page