LSU — Lactuca sativa

Summary

LsLSU (LSAT_V11C500239290) on chromosome 5 of garden lettuce encodes a polyprenyl diphosphate synthase with all-trans-nonaprenyl-diphosphate synthase, geranyltranstransferase, dimethylallyltransferase, and farnesyltranstransferase activities. The gene is associated with the biosynthesis of geranylgeranyl diphosphate, geranyl diphosphate, farnesyl diphosphate, isoprenoids, carotenoids, terpenoids, plastoquinone, ubiquinone, and vitamins A and B6. It has been linked to responses to herbivores, insects, jasmonic acid, and salicylate, as well as photosynthetic rate. The encoded protein localizes to the chloroplast thylakoid membrane, stroma, etioplast, plastid, endoplasmic reticulum, and mitochondria, and is part of a polyprenyl diphosphate synthase complex. Related genes in other species link the family to geranylgeranyl pyrophosphate biosynthesis and low light tolerance.