title: Identification of two histidyl residues in the active site of human placental estradiol 17 beta-dehydrogenase.
mesh_terms: D015067:17-Hydroxysteroid Dehydrogenases / Q000032:analysis*; D000596:Amino Acids / Q000032:analysis; D001665:Binding Sites; D002850:Chromatography, Gel; D004960:Estradiol Dehydrogenases / Q000032:analysis* / Q000037:antagonists & inhibitors; D005260:Female; D006639:Histidine / Q000032:analysis*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010206:Papain / Q000378:metabolism; D010920:Placenta / Q000201:enzymology*; D011247:Pregnancy; D014357:Trypsin / Q000378:metabolism
chemical_list: D000596:Amino Acids; D006639:Histidine; D015067:17-Hydroxysteroid Dehydrogenases; D004960:Estradiol Dehydrogenases; D014357:Trypsin; D010206:Papain