Skip to main content
. Author manuscript; available in PMC: 2013 Sep 18.
Published in final edited form as: Biochemistry. 2012 Sep 4;51(37):7290–7296. doi: 10.1021/bi3006847

Figure 3. Dithionite-minus-air oxidized difference spectra of the R. sphaeroides cbb3–type oxygen reductases.

Figure 3

The 551 nm peak is due to hemes c and 561 nm peak is mostly due to the low spin heme b. The data show the absence of the spectroscopic signature for reduced heme b in the E180D, E180Q and E183D mutants.