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.
Alignment of Sir2/cobB proteins of E. coli, V. alginolyticus, φSt2, and KVP40. Red asterisk highlights the histidine active site. Boxes represent conserved regions of active sites (red), acetyl-lysine binding sites (orange), salt bridges of finger-like viral protein domains (blue), zinc ligand sites of finger-like bacterial protein domains (magenta).
