Scientists have finally found the 'universal machine' that every living thing uses to build its cellular power plants.
April 17, 2026
Original Paper
Structural evolution of the MTCH family of mitochondrial insertases
bioRxiv · 10.64898/2026.02.17.705849
The Takeaway
Mitochondria are the batteries of the cell, but for years, we didn't know exactly how the proteins needed to run those batteries were 'installed' into their membrane. Researchers just identified a specific 'machine' called MTCH2 that acts as a universal installer, physically pushing these proteins into place. What’s truly wild is that this mechanism appears to be shared by every kingdom of life, from plants to humans, meaning it's been around for billions of years. This is a first-ever look at a fundamental biological process that is likely happening in every cell of your body right now. Understanding this 'installer' could help us treat dozens of diseases where the cell's power plants break down.
From the abstract
Here we demonstrated that MTCH2 is the defining member of a large family of mitochondrial outer membrane (OM) insertases. The MTCH family is conserved across holozoa and has diverged from the solute carrier 25 transporters. The cryoelectron microscopy structure of the 33 kDa human MTCH2 revealed that evolution of its insertase activity required loss of a transmembrane helix, which created a lipid-accessible hydrophilic groove stabilized by its unique, structured C-terminus. Mutational analyses s