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.
Preferred model for passenger domain transport. A passenger domain hairpin intermediate forms in a hybrida BamA-AT β-barrel (left panel), and secretion of the passenger domain occurs before the release and closure of the AT β-barrel domain to form the fully folded AT (right panel). The BamA and AT β-barrels are semi-transparent to clearly show the AT passenger domain.
