Complex I

Complex I is the first and largest enzyme of the respiratory chain, coupling electron transfer between NADH and
ubiquinone to the translocation of four protons across the membrane. It has a central role in cellular energy
production and has been implicated in many human neurodegenerative diseases.

The overview of Complex I
Page 1
Fold of antiporter-like subunits
Page 2
Ligands in ComplexI Page 3
Interactions between subunits Page 4
Mutation in Complex I
Page 5