β-sheet stack structures in protein crystals are held together with some of nature's weakest links: hydrogen bonds. It turns out that the size of the crystal stack makes a difference to its strength — and smaller is better.
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Semmrich, C., Bausch, A. How the weak become strong. Nature Mater 9, 293–295 (2010). https://doi.org/10.1038/nmat2735
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DOI: https://doi.org/10.1038/nmat2735