Glyceollins are a family of prenylated pterocarpan found in ineffective types of nodule in soybean in response to symbiotic infection. They are phytoalexins with an antiestrogenic activity.
Glycinol is the direct precursor of glyceollins through the action of a prenyltransferase. Glyceollin synthase then transforms those prenylated precursors into glyceollins.
