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Target intelligence / Profile preview
Proton Pump
- Molecular classification
- Enzyme, Integral membrane protein, P-type ATPase, F-type ATPase, V-type ATPase
01
Overview
A proton pump is an integral membrane protein that actively transports protons (hydrogen ions, H⁺) across biological membranes, creating a proton gradient. This process is fundamental to various physiological functions in both prokaryotic and eukaryotic cells. Clinically, the gastric H⁺/K⁺ ATPase is a key target for proton pump inhibitors used in the treatment of acid-related disorders.
02
Mechanism of action
Irreversible inhibition of H⁺/K⁺ ATPase by covalent binding after activation in acidic environment.
03
Biological functions
Active transportGeneration of electrochemical gradientATP synthesisNutrient uptakeAcid secretion
04
Disease associations
Gastroesophageal reflux disease (GERD)Peptic ulcerZollinger-Ellison syndromeHelicobacter pylori infection
05
Safety considerations
Impaired absorption of vitamin B12Impaired absorption of calcium
06
Interacting drugs
Proton pump inhibitors (PPIs)
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