Mitochondrial membrane ATP synthase (F (1)F (0) ATP synthase or Complex V) produces ATP from ADP in the presence of a proton gradient across the membrane which is generated by electron transport complexes of the respiratory chain. F-type ATPases consist of two structural domains, F (1) - containing the extramembraneous catalytic core and F (0) - containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F (1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation. Part of the complex F (0) domain. A homomeric c-ring of probably 10 subunits is part of the complex rotary element.