title: E. gracilis RNA polymerase I: a zinc metalloenzyme.
mesh_terms: D000818:Animals; D003300:Copper / Q000032:analysis; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D005056:Euglena gracilis / Q000201:enzymology*; D007501:Iron / Q000032:analysis; D007700:Kinetics; D046911:Macromolecular Substances; D008345:Manganese / Q000032:analysis; D008970:Molecular Weight; D010618:Phenanthrolines / Q000494:pharmacology; D012318:RNA Polymerase I / Q000302:isolation & purification / Q000378:metabolism; D015032:Zinc / Q000032:analysis*
chemical_list: D046911:Macromolecular Substances; D010618:Phenanthrolines; D008345:Manganese; D003300:Copper; D007501:Iron; D012321:DNA-Directed RNA Polymerases; D012318:RNA Polymerase I; D015032:Zinc