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.
(a) Ribbon drawing of BH17 showing the N-terminal extension, helix, linker, and β-hairpin (generated by the program molmol; ref. 31). (b) Backbone in BH17 drawn with x-ray structure coordinates. Dashed lines indicate the intramolecular hydrogen bonds.
