title: Multiple forms of brain adenylate cyclase: stimulation by Mn2+.
abstract: Mn2+-stimulated adenylate cyclase (ATP pyrophosphate-lyase-(cyclizing), EC 4.6.1.1) activity in detergent solubilized preparations from mouse brain. While NaF-stimulated activity was decreased by both solubilization and storage at 0--4 degrees C, the ability of the enzyme to be stimulated by Mn2+ was maintained for up to one week. By including Mn2+ in the assay of adenylate cyclase in gel fractions after isoelectric focusing, two distinct peaks of enzyme activity (pI1 - 5.8, pI2 = 6.4) were detected, suggesting the existence of more than one type of catalytic subunit in mouse brain cell membranes.
mesh_terms: D000262:Adenylyl Cyclases / Q000302:isolation & purification / Q000378:metabolism*; D000818:Animals; D001921:Brain / Q000201:enzymology*; D007525:Isoelectric Focusing; D008345:Manganese / Q000494:pharmacology*; D051379:Mice
chemical_list: D008345:Manganese; D000262:Adenylyl Cyclases