2.3.1.105 ADP 29% decline in subcellular fraction P3A activity, 43% decline in subcellular fraction P3B activity and 7% decline in subcellular fraction P3D activity 13 2.3.1.105 Alkaline phosphatase 92-95% activity lost for subcellular fractions P3A and P3B 8296 2.3.1.105 ATP little effect on the enzyme activity for the subcellular fraction P3A, 55-64% decline in the subcellular fraction P3B 4 2.3.1.105 CaCl2 1 mM CaCl2 inhibits 73% and 24% activity of subcellular fractions P3B and P3D respectively 218 2.3.1.105 dithiothreitol - 45 2.3.1.105 EDTA inhibits 30% fraction P3D, does not inhibit subcellular fraction P3A 21 2.3.1.105 MgADP- inhibitory effects less severe than MgATP 795 2.3.1.105 MgAMP less inhibitory effect than MgADP 13347 2.3.1.105 MgATP2- extreme inhibition in all microsomal fractions 108 2.3.1.105 MgCl2 at 2 mM: 30, 28 and 58% inhibition of subcellular fractions P3A, P3B and P3D activities respectively 196 2.3.1.105 additional information ATP, GTP, UTP, CTP show small or no inhibition effects for fraction P3A 2 2.3.1.105 additional information not inhibited by 1-alkyl-sn-glycero-3-phosphocholine, 1-alkyl-sn-glycero-3-phosphocholine 2 2.3.1.105 Sodium vanadate inhibits at concentrations above 0.025 mM 4598