title: Studies on hydroxyindole-O-methyltransferase in frog brain and retina: enzymology, regional distribution and environmental control of enzyme levels.
mesh_terms: D000121:Acetylserotonin O-Methyltransferase / Q000378:metabolism*; D000818:Animals; D001001:Anura; D001921:Brain / Q000201:enzymology*; D002940:Circadian Rhythm; D003624:Darkness; D004027:Diencephalon / Q000201:enzymology; D004848:Epithelium / Q000201:enzymology; D007527:Isoenzymes / Q000378:metabolism; D008027:Light; D008636:Mesencephalon / Q000201:enzymology; D008780:Methyltransferases / Q000378:metabolism*; D009928:Organ Specificity; D010860:Pigments, Biological; D010870:Pineal Gland / Q000201:enzymology; D011894:Rana pipiens; D012160:Retina / Q000201:enzymology*; D013687:Telencephalon / Q000201:enzymology
chemical_list: D007527:Isoenzymes; D010860:Pigments, Biological; D008780:Methyltransferases; D000121:Acetylserotonin O-Methyltransferase