mitokondri elektrontransportahela valguline kompleks I, mis aktsepteerib elektrone NADH-lt ja annab need koensüümQ-le, Protein complex I in the mitochondrial electron transport chain, which accepts electrons from NADH and gives them to the coenzyme Q. Participates in transporting protons from matrix to the intermembrane space in mitochondria and also in creating the proton motive force.