| Literature DB >> 20859792 |
Hiroshi Ashihara1, Misako Kato, Alan Crozier.
Abstract
Methylxanthines and methyluric acids are purine alkaloids that are synthesized in quantity in a limited number of plant species, including tea, coffee and cacao. This review summarizes the pathways, enzymes and related genes of caffeine biosynthesis. The main biosynthetic pathway is a sequence consisting of xanthosine → 7-methylxanthosine → 7-methylxanthine → theobromine → caffeine. Catabolism of caffeine starts with its conversion to theophylline. Typically, this reaction is very slow in caffeine-accumulating plants. Finally, the ecological roles of caffeine and the production of decaffeinated coffee plants are discussed.Entities:
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Year: 2011 PMID: 20859792 DOI: 10.1007/978-3-642-13443-2_2
Source DB: PubMed Journal: Handb Exp Pharmacol ISSN: 0171-2004