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It is an active pump that generates a proton concentration gradient across the inner mitochondrial membrane, because there are more protons outside the matrix than inside. The difference in pH and electric charge (ignoring differences in buffer capacity) creates an electrochemical potential difference that works similar to that of a battery or ...
-ATPase or proton pump creates the electrochemical gradients in the plasma membrane of plants, fungi, protists, and many prokaryotes. Here, proton gradients are used to drive secondary transport processes. As such, it is essential for the uptake of most metabolites, and also for plant responses to the environment (e.g., movement of leaves).
The gastric hydrogen potassium ATPase or H + /K + ATPase is the proton pump of the stomach.It exchanges potassium from the intestinal lumen with cytoplasmic hydronium [2] and is the enzyme primarily responsible for the acidification of the stomach contents and the activation of the digestive enzyme pepsin [3] (see gastric acid).
This page was last edited on 12 June 2006, at 16:09 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Omeprazole is a proton-pump inhibitor (PPI) and its effectiveness is similar to that of other PPIs. [9] It can be taken by mouth or by injection into a vein . [ 1 ] [ 10 ] It is also available in the fixed-dose combination medication omeprazole/sodium bicarbonate as Zegerid [ 11 ] [ 12 ] and as Konvomep.
P. P-process; Proton charge; Proton decay; Proton emission; Proton nuclear magnetic resonance; Proton pump; Proton radius puzzle; Proton spin crisis; Proton computed tomography
the bacterial rhodopsin, called Proteorhodopsin, is a light-driven proton pump that functions as does bacteriorhodopsins; the Neurospora crassa retinal-containing receptor serves as a photoreceptor (Neurospora ospin I); [21] the green algal light-gated proton channel, Channelrhodopsin-1; Sensory rhodopsins from cyanobacteria.
Bacteriorhodopsin is a light-driven proton pump. It is the retinal molecule that changes its isomerization state from all- trans to 13- cis when it absorbs a photon . The surrounding protein responds to the change in the chromophore shape, by undergoing an ordered sequence of conformational changes (collectively known as the photocycle). [ 17 ]