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Complete shift of ferritin oligomerization toward nanocage assembly via engineered protein-protein interactions.

Computational redesign of a dimorphic protein nano-cage at the C3-symmetrical interfaces forces it to assemble into the monomorphic cage. These monodisperse assemblies are at least 20 °C more stable than the parent. This approach adds to the toolkit of bottom-up molecular design with applications in protein engineering and hybrid nano-materials.