title: The effects of several divalent cations on the activation or inhibition of RNA polymerases II.
mesh_terms: D000363:Agaricales; D000818:Animals; D001667:Binding, Competitive; D002413:Cations, Divalent / Q000494:pharmacology*; D002417:Cattle; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism*; D066298:In Vitro Techniques; D007700:Kinetics; D012319:RNA Polymerase II / Q000037:antagonists & inhibitors / Q000378:metabolism*; D014158:Transcription, Genetic; D015032:Zinc / Q000494:pharmacology
chemical_list: D002413:Cations, Divalent; D012319:RNA Polymerase II; D012321:DNA-Directed RNA Polymerases; D015032:Zinc