In the legend of Figure 2 in the article "The amyloid state and its association with protein misfolding diseases" by Thomas P. J. Knowles, Michele Vendruscolo, and Christopher M. Dobson, there was a misprint in the description of hydrogen bonding constraints. The sentence incorrectly referred to 'inter-side chain' hydrogen bonding constraints, which should have been 'inter-main chain' hydrogen bonding constraints. This error has been corrected online, and the authors apologize for any confusion caused.In the legend of Figure 2 in the article "The amyloid state and its association with protein misfolding diseases" by Thomas P. J. Knowles, Michele Vendruscolo, and Christopher M. Dobson, there was a misprint in the description of hydrogen bonding constraints. The sentence incorrectly referred to 'inter-side chain' hydrogen bonding constraints, which should have been 'inter-main chain' hydrogen bonding constraints. This error has been corrected online, and the authors apologize for any confusion caused.