
In mitochondria, respiratory supercomplexes (blue) pump protons across crista membranes to create an electrochemical gradient, fueling adenosine triphosphate (ATP) synthase (pink) to regenerate ATP—the energy currency of life. Now, cryo–electron tomography captures these supercomplexes in their native organization, illuminating how the coordinated action of these molecular machines drives life’s fundamental energy conversion. Learn more this week in Science: scim.ag/3FQ6bEh































