FIG. 2.
Inhibition of the cyt c oxidase activity found in R. sphaeroides membranes. Inhibitory effects of CN− (circles) and N3− (triangles) on ascorbate and cyt c oxidase activities found in membrane fragments of R. sphaeroides wild-type strain Ga were determined as described in Materials and Methods. aa3 and cbb3 correspond to the aa3-Cox and cbb3-Cox, respectively. See the text for details.