Steps in the synthesis of selected alkaloids and other primarily plant-specific products catalysed by 2OG-dependent oxygenases. (A) Hydroxylase and epoxidase activities of hyoscyamine hydroxylase. (B) Desacetoxyvindoline 4-hydroxylase. (C) Thebaine 6-O-demethylase. (D) Codeine O-demethylase. (E) LolO-catalysed ether bridge formation in loline alkaloid biosynthesis. (F) Mugineic acid phytosiderophore synthesis. (G) Feruloyl-CoA 6′-hydroxylase and p-coumaroyl-CoA 2′-hydroxylase in the pathways for synthesis of scopoletin and umbelliferone (yellow highlight). (H) Action of AOP2 and AOP3 on methylsulfinylalkyl glucosinolates. (I) Indole-3-acetic acid 2-hydroxylase. (J) Salicylic acid 3-hydroxylase.