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.
The 3D structure of the SMS dimer. The green one is the C chain, while the cyan one is the D chain. The disease-causing mutation site is shown with colored balls (orange, carbon atom; red, oxygen atom; and blue, nitrogen atom); SPD and MTA are represented with magenta stick and yellow stick, respectively.
