The enzyme conservation analysis demonstrated the 16 metabolic pathways are well conserved across the evaluated microalgae species. Specifically, 77% of evaluated enzymes are conserved across all seven microalgae species, 99% (i.e., all but one) are conserved in at least four out of the seven microalgae species, and the remaining one enzyme (glucose-6-phosphatase, G6PC) is conserved across two species (Figure ). G6PC is responsible for converting G6P back to glucose, but reconverting G6P to glucose was not assumed in the PM 2 . The conservation of pathways among various microalgae species supports the potential of the PM 2 to be used to model mixed microalgae communities.