Skip to main content
. 2019 May 11;8(2):28. doi: 10.3390/biology8020028

Figure 1.

Figure 1

Redox forms of CoQ10. ubiquinone (oxidized form), ubiquinol (reduced form), and semiquinone (semi-oxidized). The Q cycle within the matrix membrane allows proton transfer from the mitochondrial matrix to the intermembrane space helping to generate the electrochemical gradient for ATP production.