there is growing evidence that mitochondrial complexes i, ii, iii, and iv are part of a larger supercomplex. the advantage of having all four complexes within a supercomplex is that it makes the electron transport across various complexes easier and faster.
Mitchondria have four types of complexes-
Complex I- NADH/ ubiquinone oxireductase, blue
Complex II- Succinate dehydrogenase, pink
Complex III- Cytochrome c reductase
Complex IV- Cytochrome c oxidase
The electron flows through the various complexes in process of formation of the ATP molecules.
The advantage of having a supercomplex which accomodates all the four types of complexes is that the electron will then flow in solid state which is kinetically more favorable.
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