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.
Comparison of the structures of the DDE triad (Asp, Asp, and Glu) and its vicinities. (A) Superimposed DDE triad region non-cryogenic (green) and cryogenic (blue) structures of HIV-1 integrase catalytic core domain. (B) Hydrogen bond network mediated by water molecules near the active site.
