Words similar to v-atp
Example sentences for: v-atp
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Subjecting NaCl adapted cells to salt stress resulted in an approximately four fold increase in both proton transport and ATP hydrolysis on isolated membranes compared to unadapted cells [ 58 ] . Remarkably this increase in overall V-ATPase activity coincided with an apparent reduction in the amount of enzyme on the tonoplast.
The limited work done to evaluate the role of V-ATPases in drought stress has provided conflicting results.
The catalytic subunit exists as two distinct genes with highly conserved exons and intron boundaries in twelve species of plants [ 25 ] . In the flowering plant Daucus carota (carrot) evidence exists for two distinct isoforms for the catalytic subunit, one of which is tonoplast specific while the other is localized to the Golgi [ 26 ] . In addition, two distinct mRNAs have been isolated from cotton ( Gossypium hirsutum ) [ 27 ] . Two subunit A mRNAs are expressed in the unicellular alga Acetabularia acetabulum [ 28 29 ] . Isoforms of other V-ATPase subunits are also known from plants including subunit B [ 27 30 32 ] , the proteolipid subunit [ 33 34 35 36 37 ] and subunits D and E [ 38 ] .
The only work published previously on V-ATPase subunit isoforms and stress is concerned with the proteolipid gene family in Arabidopsis thaliana.
The structure of the bovine mitochondrial F 1 -ATPase has been determined by X-ray crystallography [ 30 ] . The intein insertion points in the yeasts' V-ATPase and the Thermoplasma and Pyrococcus A-ATPases correspond to the catalytic site where the ATP binds and is hydrolyzed during the catalytic cycle.
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