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The F-ATP synthase displays high functional and mechanistic similarity to the V-ATPase. [18] However, whereas the F-ATP synthase generates ATP by utilising a proton gradient, the V-ATPase generates a proton gradient at the expense of ATP, generating pH values of as low as 1. [19]
F-ATP synthases are identical in appearance and function except for the mitochondrial F 0 F 1-ATP synthase, which contains 7-9 additional subunits. [12] The electrochemical potential is what causes the c-ring to rotate in a clockwise direction for ATP synthesis. This causes the central stalk and the catalytic domain to change shape.
F-ATPase, also known as F-Type ATPase, is an ATPase/synthase found in bacterial plasma membranes, in mitochondrial inner membranes (in oxidative phosphorylation, where it is known as Complex V), and in chloroplast thylakoid membranes.
A part of F1 ATP synthase complex: alpha, beta and gamma subunits (The alpha and beta (or A and B) subunits are found in the F1, V1, and A1 complexes of F-, V- and A-ATPases, respectively, as well as flagellar (T3SS) ATPase and the termination factor Rho. The subunits make up a ring that contains the ATP-hydrolyzing (or producing) catalytic core.
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 from ATP hydrolysis to produce a proton gradient. The Archaea-type ATPase (A-ATPase) is a related group of ATPases found in ...
The F-type proton ATPase is a multi-subunit enzyme of the F-type (also referred to as ATP synthase or F O F 1 ATPase). It is found in the mitochondrial inner membrane where it functions as a proton transport-driven ATP synthase. In mitochondria, reducing equivalents provided by electron transfer or photosynthesis power this translocation of ...
Gamma subunit of ATP synthase F1 complex forms the central shaft that connects the Fo rotary motor to the F1 catalytic core. F-ATP synthases (also known as F1Fo ATPase, or H(+)-transporting two-sector ATPase) (EC 3.6.3.14) are composed of two linked complexes: the F1 ATPase complex is the catalytic core and is composed of 5 subunits (alpha, beta, gamma, delta, epsilon), while the Fo ATPase ...
Proton ATPase, graphic representation. In the field of enzymology, a proton ATPase, or H +-ATPase, is an enzyme that catalyzes the following chemical reaction: ATP + H 2 O + H + in ADP + phosphate + H + out. The 3 substrates of this enzyme are ATP, H 2 O, and H +, whereas its 3 products are ADP, phosphate, and H +.