<prompt> Proton pump inhibitors inhibit___ in the parietal cells of stomach -H K ATPaseNa Ca ATPaseLigand gated K channelLigand gated Ca channel  <response>: Ans. is a i.e., H K ATPase Drugs in this group are - Omeprazole, Esomeprazole, Lansoprazole, Pantoprazole, Rabeprazole. These drugs inhibit H K ATPase in parietal cells of stomach. 