Fig. 6From: Identifying enriched drug fragments as possible candidates for metabolic engineeringBiosynthetic pathway involving caffeine. Information about the biosynthetic pathway of the enriched fragment caffeine in C. irrawadiensis was obtained from Retropath (top). The biosynthetic pathways from caffeine to xanthine, theophylline, and 1-methyluric acid were obtained from Pathpred (bottom)Back to article page