If an enzyme name is shown in bold, there is experimental evidence for this enzymatic activity.
|Superclasses:||Biosynthesis → Secondary Metabolites Biosynthesis → Nitrogen-Containing Secondary Compounds Biosynthesis → Alkaloids Biosynthesis|
Some taxa known to possess this pathway include : Ephedra gerardiana
Expected Taxonomic Range: Ephedra
Ephedrine and pseudoephedrine are alkaloids produced in the plant genus Ephedra. Ephedrine is used by human beings as a stimulant, appetite suppressant, concentration aid, decongestant and to treat hypotension from such as spinal/epidural anaesthesia. In traditional Chinese medicine, ephedrine has been used in the treatment of asthma. Ephedrine acts on neurotransmission in the brain due to its ability to increase the release of neurotransmitters dopamine and serotonin. The ephedrine biosynthesis pathway was proposed based on radio tracer experiments. No enzyme has been characterized for this pathway.
Yamasaki73: Yamasaki, Kazuo, Tamaki, Taro, Uzawa, Sumiko, Sankawa, Ushio, Shibata, Shoji (1973). "Participation of C6-C1 unit in the biosynthesis of ephedrine in Ephedra." Phytochemistry, 12:2877-2882.
Kim01c: Kim SH, Virmani D, Wake K, MacDonald K, Kronstad JW, Ellis BE (2001). "Cloning and disruption of a phenylalanine ammonia-lyase gene from Ustilago maydis." Curr Genet 40(1);40-8. PMID: 11570515
Vannelli07: Vannelli T, Wei Qi W, Sweigard J, Gatenby AA, Sariaslani FS (2007). "Production of p-hydroxycinnamic acid from glucose in Saccharomyces cerevisiae and Escherichia coli by expression of heterologous genes from plants and fungi." Metab Eng 9(2);142-51. PMID: 17204442
Xiang02a: Xiang L, Moore BS (2002). "Inactivation, complementation, and heterologous expression of encP, a novel bacterial phenylalanine ammonia-lyase gene." J Biol Chem 277(36);32505-9. PMID: 12082112
Xue07: Xue Z, McCluskey M, Cantera K, Sariaslani FS, Huang L (2007). "Identification, characterization and functional expression of a tyrosine ammonia-lyase and its mutants from the photosynthetic bacterium Rhodobacter sphaeroides." J Ind Microbiol Biotechnol 34(9);599-604. PMID: 17602252
©2014 SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025-3493