Corrigendum: Mitochondrial Atpif1 regulates haem synthesis in developing erythroblasts

Nature 491, 608–612 (2012); doi:10.1038/nature11536 On page 610 of this Letter, the overview comments concerning the action of ATP synthase should read: “Under physiological conditions, the F1F0-ATP synthase generates ATP by consuming the proton motive force existing across the inner mitochondrial membrane, transporting H+ ions from the intermembrane space into the mitochondrial matrix8,15.