Prenyl Transferases

Prenyl transferases are a class of enzymes that attach isoprenoid side chains (prenyl groups) to substrate molecules, playing a foundational role in phytochemical synthesis across cannabis and other plants. In cannabis genetics, these enzymes are critical to the biosynthesis of cannabinoids and terpenes—the prenylation of olivetolic acid by cannabinoid synthases is a canonical example. Breeders and geneticists study prenyl transferase gene expression and activity to understand variation in cannabinoid and terpenoid profiles across cultivars. The efficiency and specificity of these enzymes directly influence the ratios of THCA, CBDA, and minor cannabinoids, as well as the diversity of aromatic compounds. Research into prenyl transferase polymorphisms continues to reveal how genetic variation in these enzyme families contributes to chemotypic diversity in cannabis breeding programs.

Breeders working to stabilize or shift cannabinoid and terpene ratios often focus on cultivars with distinct prenyl transferase expression patterns. Understanding the genetic basis of these enzymatic variations supports marker-assisted selection for specific chemotypes and phenotypic consistency.