Figure 1.

Schematic diagrams of the photosynthetic electron transport chain (A) and respiratory electron chains (B). Components shared by both processes are indicated with asterisks, and terminal oxidase complexes are highlighted in boldface type. Individual subunits are only shown for terminal oxidase complexes. The localization of NAD(P)H dehydrogenase (NDH2), succinate dehydrogenase, and Cyd in the cytoplasmic membrane has not been confirmed. [See online article for color version of this figure.]