Glyceollins are a family of prenylated pterocarpan

Pterocarpan

Pterocarpans are derivatives of isoflavonoids found in the Fabaceae family. It is a group of compounds which can be described as benzo-pyrano-furano-benzenes Pterocarpans are derivatives of isoflavonoids found in the Fabaceae family. It is a group of compounds which can be described as...

 found in ineffective types of nodule in soybean

Soybean

The soybean or soya bean is a species of legume native to East Asia, widely grown for its edible bean which has numerous uses...

 in response to symbiotic infection. They are phytoalexin

Phytoalexin

Phytoalexins are antimicrobial substances synthesized de novo by plants that accumulate rapidly at areas of incompatible pathogen infection. They are broad spectrum inhibitors and are chemically diverse with different types characteristic of particular plant species...

s with an antiestrogenic activity.

Molecules found in the family are :

• Glyceollin I
  Glyceollin I
  Glyceollin I is a glyceollin, a type of prenylated pterocarpan. It is a phytoalexin found in the soybean.Glyceollin synthase is an enzyme responsible for the production of glyceollin...
  
  
• Glyceollin II
• Glyceollin III
  Glyceollin III
  Glyceollin III is a glyceollin, a type of pterocarpan, found in the soybean . It has an antiestrogenic effect. In soil, it has an antifungal activity against Aspergillus sojae....
  
  
• Glyceollin IV

Metabolism

Glycinol

Glycinol (pterocarpan)

Glycinol is a pterocarpan, a type of natural phenol. It is a phytoalexin found in the soybean . It is formed by the cyclisation of daidzein...

 is the direct precursor of glyceollins through the action of a prenyltransferase

Prenyltransferase

Prenyltransferases are a class of enzymes that transfer allylic prenyl groups to acceptor molecules. Prenyl transferases commonly refer to prenyl diphosphate synthases....

. Glyceollin synthase

Glyceollin synthase

In enzymology, a glyceollin synthase is an enzyme that catalyzes the last committed step in glyceollin biosynthesis. This enzyme has been classified as a cytochrome dependent monooxygenase...

then transforms those prenylated precursors into glyceollins.