Fig. 3 in The esterification of xanthophylls in Solanum lycopersicum (tomato) chromoplasts; the role of a non-specific acyltransferase

Fig. 3. Biosynthetic pathway of ketocarotenoids and ketocarotenoid esters. CRTZ and CRTW are the bacterial carotenoid hydroxylase and oxygenase enzymes respectively. The PYP gene facilitates the esterification with fatty acids to generate ketocarotenoid esters. Phoenicoxanthin and astaxanthin accumulate within the genotypes assessed and esterified forms of these have been observed in this work.