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) Human SSRP, (B) protostome ASTC, (C) echinoderm SS2 peptide, (D) SS1 peptide, and (E) consomatins from fish-hunting cone snails. Cysteines and amino acids of the core SS receptor binding motif are shown in yellow and blue, respectively. Modifications: γ, γ-carboxyglutamate; w, d-tryptophan; O, hydroxyproline.
