Fig. 1
From: High throughput profiling of tocochromanols in leaves and seeds of Arabidopsis and Maize
Overview of the tocopherols and tocotrienols synthesis and sources of metabolites. Enzyme abbreviations: VTE2 (homogentisic acid phytyltransferase), HGGT (homogentisate geranylgeranyl transferase), VTE3 (MPBQ/MGGBQ methyltransferase), VTE1 (tocopherol cyclase) and VTE4 (Îł-tocopherol methyltransferase). Compound abbreviations: MEP (methylerythritol 4-phosphate), GGDP (geranylgeranyl diphosphate), Phytyl-PP (phytyl diphosphate), MPBQ (2-methyl-6-phytyl-benzoquinol), MGGBQ (2-methyl-6-geranylgeranyl-1,4-benzoquinol), DMPBQ (2,3-dimethyl-5-phytyl-1,4-benzoquinone), DMGGBQ (2,3-dimethyl-5-geranylgeranyl-1,4-benzoquinol), SAM (S-adenosyl-l-methionine), and SAH (S-adenosyl-l-homocysteine)