4.2.1.122	synthesis	the enzyme participates in psilocybin formation from 4-hydroxyindole and L-serine, which are less cost-intensive substrates, compared to the previous method. The pharmaceutical interest in this psychotropic natural product as a future medication to treat depression and anxiety is strongly reemerging. Enzymatic production of 7-phosphoryloxytryptamine (isonorbaeocystin), a non-natural congener of the Psilocybe alkaloid norbaeocystin (4-phosphoryloxytryptamine), and of serotonin (5-hydroxytryptamine) by means of the same in vitro approach	747575