ID 2.1.1.345 DE psilocybin synthase. CA 4-hydoxytryptamine 4-phosphate + 2 S-adenosyl-L-methionine = 2 H(+) + CA psilocybin + 2 S-adenosyl-L-homocysteine. CC -!- Isolated from the fungus Psilocybe cubensis. CC -!- The product, psilocybin, is a psychoactive compound. //