title: [Magnesium-activated adenosine triphosphate of the ampullae of Lorenzini of the skate Dasyatis pastinaca].
abstract: Studies have been made on Mg2+-activated ATPase of electroreceptor structures of the lateral line organin the ray D. pastinaca. It was shown that the enzyme is activated by magnesium ions (2.5 mM), maximum activation being observed at pH 8.0-8.5. The enzyme exhibits substrate specificity to adenyl nucleotides. Walls of ampullar canals also contain Mg2+-ATPase, however the level of the enzymatic activity in these walls is significantly lower.
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D004560:Electricity; D004789:Enzyme Activation; D005399:Fishes / Q000378:metabolism*; D008274:Magnesium; D011984:Sensory Receptor Cells / Q000201:enzymology*
chemical_list: D000251:Adenosine Triphosphatases; D008274:Magnesium
vernacular_title: Magniĭ-aktiviruemaia adenozintrifosfataza ampul Lorentsini u skata Dasyatis pastinaca.