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) Relative orientation of two triple helices in an asymmetric unit. (B) CH-π interaction between a’:Hyp19 and a:Tyr1. The geometric center of the aromatic ring is represented with a dot. (C and D) Two complex salt-bridge networks. To show atomic-level details of the CH-π interaction, the stick representations in B are further enlarged compared with those in C and D.
