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. Author manuscript; available in PMC: 2014 Aug 5.
Published in final edited form as: J Mol Microbiol Biotechnol. 2013 Aug 5;23(0):10.1159/000351625. doi: 10.1159/000351625

Figure 5.

Figure 5

F-type ATPase constituents and structure. (A) The subunits and their properties. The membrane sector (F0) includes subunits indicated by arabic letters while the cytoplasmic sector (F1) includes subunits indicated by Greek letters. Subscripted numbers indicate the subunit stoichiometries. [Pedersen, 2007; Saroussi and Nelson, 2009]. TMS, transmembrane α-helical segment. (B) Structural depiction of the catalytic ATPase (F1 part showing arrangements of the 3 α and 3 β subunits. Numbers 1–3 refer to the three steps involved in the synthesis of ATP (or its hydrolysis, the reverse reaction)), the 3-step mechanism of action. (C) Overall schematized structure of the F-type ATPase complex showing association of subunits with the rotor (top) and stator (bottom; refer to (A) for rotor and stator subunit compositions).