Fig. 1. Schematic overview of isoprenoid alcohol metabolism in African Oil Palm. Geranygeranyldiphosphate (geranylgeranyl-PP) can be esterified with chlorophyllide yielding geranylgeranylchlorophyll, or dephosphorylated to yield geranylgeraniol. Geranylgeranyl-chlorophyll is reduced to phytol-containing chlorophyll by geranylgeranyl reductase (GGR), and the resulting phytol tail can be released. Isoprenoid alcohols can be esterified with fatty acids producing FAPE and FAGGE, respectively, presumably by one of the EgELT enzymes in Oil Palm. Geranylgeranyl-PP is the substrate for the synthesis of carotenoids and tocotrienol. Phytol can be phosphorylated two times by VTE5 and VTE6 yielding phytyl-diphosphate (phytol-PP), the precursor for tocopherol synthesis.

Published as part of Gutbrod, Philipp, Reichert, Sophie, Gutbrod, Katharina, Hamai, Amazigh, Br, Claire, eh, elin, Ngando-Ebongue, Georges & Dormann, Peter, 2021, Fatty acid isoprenoid alcohol ester synthesis in fruits of the African Oil Palm (Elaeis guineensis), pp. 1-9 in Phytochemistry (112684) 185 on page 2, DOI: 10.1016/j.phytochem.2021.112684, http://zenodo.org/record/8259745