Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Ensembles of structures determined from NMR data at 0 (Center) and 10 (Right) M urea. The native structure is shown for comparison (Left). The thick line corresponds to the average structure, the two stable cores are shown in red (α core) and blue (β core), and the less stable interface is shown in green (see text).
