Reaction: prenyl diphosphate + umbelliferone = diphosphate + demethylsuberosin
For diagram of reaction click here.
Glossary: demethylsuberosin = 7-hydroxy-6-prenyl-1-benzopyran-2-one
osthenol = 7-hydroxy-8-prenyl-1-benzopyran-2-one
Other name(s): PcPT; dimethylallyl-diphosphate:umbelliferone 6-dimethylallyltransferase
Systematic name: prenyl-diphosphate:umbelliferone 6-dimethylallyltransferase
Comments: The enzyme from parsley (Petroselinum crispum) is specific for umbelliferone and prenyl diphosphate. A minor product is osthenol, which is produced by transfer of the dimethylallyl group to C-8 of umbelliferone.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:
1. Hamerski, D., Schmitt, D. and Matern, U. Induction of two prenyltransferases for the accumulation of coumarin phytoalexins in elicitor-treated Ammi majus cell suspension cultures. Phytochemistry 29 (1990) 1131-1135. [PMID: 1366425]
2. Karamat, F., Olry, A., Munakata, R., Koeduka, T., Sugiyama, A., Paris, C., Hehn, A., Bourgaud, F. and Yazaki, K. A coumarin-specific prenyltransferase catalyzes the crucial biosynthetic reaction for furanocoumarin formation in parsley. Plant J. 77 (2014) 627-638. [PMID: 24354545]