Not one ring but many: Antioxidant enzyme family can assemble in far more diverse ways than previously thought
Why it matters: Understanding enzyme assembly unlocks precise control of oxidative stress, a root cause of many chronic diseases.
- Peroxiredoxins were long thought to form only simple dimers or decamers, but cryo‑EM and X‑ray studies now show dozens of alternative assemblies (Nature Communications, 2026).
- Structural biologists highlight that these diverse oligomers can switch activity states, offering a built‑in regulatory mechanism (University of California press release).
- Health researchers argue that targeting specific peroxiredoxin assemblies could fine‑tune antioxidant defenses in diseases like neurodegeneration and cancer (Science commentary).
New structural work reveals that peroxiredoxins—key antioxidant enzymes—can assemble into a far richer set of oligomeric shapes than the classic dimer‑decamer model. This flexibility reshapes how scientists view cellular redox signaling and opens fresh avenues for therapeutic modulation of oxidative stress.
