Nature Reviews Molecular Cell Biology 15, 384–396 (2014)

In the legend of figure 2 of the above article (page 388), the sentence “The spacing between polypeptide chains along the fibril axis is constant to a good approximation even for very different polypeptide sequences, a generic property arising from the common inter-side chain hydrogen bonding constraints (orange line in part b).” incorrectly referred to 'inter-side chain' hydrogen bonding constraints, whereas it should have referred to 'inter-main chain' hydrogen bonding constraints. This has been corrected online. The authors apologize for any confusion caused to readers.