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.
Active site regions are shown in yellow, amino acid residues making 4C1 binding epitope (pink) and calcium binding epitope (green); “*”: identical, “:”: conserved and “.”: semi-conserved sites.
