Your Mitochondria Have a Self-Destruct Button (Here’s the “Death Finger” That Pulls It)

The Energy Code · May 12, 2026 · 7m

Mitochondria aren’t just your cell’s power plants — they may also contain a built-in kill switch. In this Deep Dive, Dr. Mike unpacks a 2026 Annual Review of Biophysics paper arguing that ATP synthase (the same machine that makes your ATP) can morph into the mitochondrial permeability transition pore (PT pore) under severe stress — especially calcium overload. You’ll learn the “death finger” model (subunit-e pulling a lipid plug), why cyclophilin D and inorganic phosphate help trigger the switch, and why this matters for real-world tissue injury like stroke and heart attack reperfusion…