Figure 1 | Scientific Reports

Figure 1

From: Delivery of the reduced form of vitamin K2(20) to NIH/3T3 cells partially protects against rotenone induced cell death

Figure 1

Mitochondrial respiratory chain complexes. Respiratory chain complexes I–IV generate a proton gradient on the mitochondrial inner membrane that facilitates ATP production by complex V (ATP synthase). The electron (e−) passes through complex I and complex II, respectively, and moves to complex III via the CoQ. Cytochrome c (Cyt c) transfers an electron from complex III to complex IV, which reduces O2 to form H2O. Electron flow involves proton (H+) transfer across the mitochondrial inner membrane at complexes I, III, and IV, creating an electrochemical gradient. Complex V uses the proton motive force to generate ATP.

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