- Specific inhibitors of Na+,K+-ATPase are the cardiac glycoside drugs ouabain and digitalis.
b. Ca2+-ATPase (or Ca2+ pump) in the sarcoplasmic reticulum (SR) or cell membranes transports Ca2+ against an electrochemical gradient.
c. H+,K+-ATPase (or proton pump) in gastric parietal cells transports H+ into the lumen of the stomach against its electrochemical gradient.
- It is inhibited by omeprazole.
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