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.
Types of alternating-access mechanisms. Orange and blue colors denote the transporter domains in a, Rocking-switch model, b, Rocking-bundle model. c, In the elevator model, orange region represents the static oligomerization domain whereas the blue regions represent the transport domains.
