Figure 1From: Comparative genomic analysis of C4 photosynthetic pathway evolution in grassesThe NADP-ME type of C4 pathway in sorghum and maize. CA, carboxylating anhydrase; MDH, malate dehydrogenase; ME, malic enzyme; OAA, oxaloacetate; PEPC, phosphoenolpyruvate carboxylase; PPCK, PEPC kinase; PPDK, pyruvate orthophosphate dikinase; PPDK-RP, PPDK regulatory protein; TP, transit peptide.Back to article page