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.
According to a molecular scale of version of Darwin's principle of multiply utility (Darwin 1872), each amino acid in a protein may serve many functions, and is not in general optimized for any single function of a particular scientist's interest.
