Patent 7338793 was granted and assigned to Florida Atlantic University on March, 2008 by the United States Patent and Trademark Office.
An enzyme having diterpene cyclase activity has been purified from P. elisabethae using a series of chromatography steps. The purified enzyme has an apparent molecular weight of about 47 kilodaltons and an isoelectric point of about 5.1. The purifed enzyme catalyzed the cyclization of geranyl geranyl diphosphate to elisabethatriene.