has part aromatic amino acid metabolic process indole alkaloid biosynthetic process L-tryptophan decarboxylase activity indole-containing compound biosynthetic process mycotoxin biosynthetic process organophosphate biosynthetic process psilocybin biosynthetic process https://github.com/geneontology/go-ontology/issues/23954 https://github.com/geneontology/go-ontology/issues/31028 GO:0140380 The chemical reactions and pathways resulting in the formation of psilocybin, a psychotropic tryptamine-derived natural product. pg 2019-11-20T10:03:05Z biological_process MetaCyc:PWY-7936 4-hydroxytryptamine 4-phosphate methyltransferase activity tryptamine 4-monooxygenase activity 4-hydroxytryptamine kinase activity L-amino acid metabolic process proteinogenic amino acid metabolic process