Gassner D, Komnick H
Cell Biol Int Rep. 1981 Mar;5(3):239-46. doi: 10.1016/0309-1651(81)90222-8.
An ouabain-insensitive, Mg2+-dependent, chloride- and bicarbonate-stimulated ATPase is present in salt gland homogenates of domestic ducks (Anas platyrhynchos). Furosemide and ethacrynic acid are non-competitive inhibitors of this enzyme in vitro. The inhibitor constant of furosemide is Ki = 2.5 mM and of ethacrynic acid Ki = 1.9 mM. In contrast, under the same conditions the salt gland Na+/K+-ATPase activity is not inhibited by furosemide, whereas ethacrynic acid becomes inhibitory only at higher concentrations (10 mM).
在家鸭（绿头鸭）的盐腺匀浆中存在一种哇巴因不敏感、镁离子依赖、氯离子和碳酸氢根刺激的ATP酶。呋塞米和依他尼酸在体外是该酶的非竞争性抑制剂。呋塞米的抑制常数Ki = 2.5 mM，依他尼酸的Ki = 1.9 mM。相比之下，在相同条件下，盐腺钠钾ATP酶活性不受呋塞米抑制，而依他尼酸仅在较高浓度（10 mM）时才具有抑制作用。
