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A proton pump is an integral membrane protein pump that builds up a ... reducing equivalents provided by electron transfer or photosynthesis power this translocation ...
V-ATPases couple the energy of ATP hydrolysis to proton transport across intracellular and plasma membranes of eukaryotic cells. It is generally seen as the polar opposite of ATP synthase because ATP synthase is a proton channel that uses the energy from a proton gradient to produce ATP. V-ATPase however, is a proton pump that uses the energy ...
-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 P-type ATPases, also known as E 1-E 2 ATPases, are a large group of evolutionarily related ion and lipid pumps that are found in bacteria, archaea, and eukaryotes. [1] P-type ATPases are α-helical bundle primary transporters named based upon their ability to catalyze auto- (or self-) phosphorylation (hence P) of a key conserved aspartate residue within the pump and their energy source ...
A Proton gradient moves the ions into the vacuole by proton-sodium antiporter or the proton-calcium antiporter. In plants, sucrose transport is distributed throughout the plant by the proton-pump where the pump, as discussed above, creates a gradient of protons so that there are many more on one side of the membrane than the other.
There are approximately 45,000 ATP6V1G2 proteins in the membrane, with "150 proton pumps per" micrometers squared. [13] ATP6V1G2 is a subunit of a protein. [13] It is in eukaryotic cells. [13] It pumps protons. [13] It is usually in internal plasma membranes. [13] The V1 portion of the protein "is an ATPase" and is outside of the plasma ...
The plant enzymes probably pump one H + upon hydrolysis of pyrophosphate, thereby generating a proton motive force, positive and acidic in the tonoplast lumen. They establish a pmf of similar magnitude to that generated by the H +-translocating ATPases in the same vacuolar membrane. The bacterial and archaeal proteins may catalyze fully ...
23545 21871 Ensembl ENSG00000185344 ENSMUSG00000038023 UniProt Q9Y487 P15920 RefSeq (mRNA) NM_012463 NM_011596 RefSeq (protein) NP_036595 NP_035726 Location (UCSC) Chr 12: 123.71 – 123.76 Mb Chr 5: 124.77 – 124.8 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse V-type proton ATPase 116 kDa subunit a isoform 2, also known as V-ATPase 116 kDa isoform a2, is an enzyme that in humans ...