Enzymatic O-methylation of N-acetylserotonin to melatonin.
D000121:Acetylserotonin O-Methyltransferase; D008550:Melatonin; D008715:Methionine / Q000031:analogs & derivatives; D008745:Methylation; D010870:Pineal Gland; D012436:S-Adenosylmethionine; D012701:Serotonin / Q000031:analogs & derivatives; D014166:Transferases / Q000378:metabolism*
D012701:Serotonin; D012436:S-Adenosylmethionine; D008715:Methionine; D014166:Transferases; D000121:Acetylserotonin O-Methyltransferase; D008550:Melatonin; C006389:N-acetylserotonin
METHIONINE/related compounds; SEROTONIN/related compounds; TRANSFERASES/metabolism