Engineered nanostructured β-sheet peptides protect membrane proteins.

We designed β-strand peptides that stabilize integral membrane proteins (IMPs). β-strand peptides self-assemble in solution as filaments and become restructured upon association with IMPs; resulting IMP–β-strand peptide complexes resisted aggregation when diluted in detergent-free buffer and were visible as stable, single particles with low detergent background in electron micrographs.

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