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.
Model of the relative roles of CyaY and IscX. (A) At low iron concentrations, the system is under the control of IscX, which fills the binding site and impedes binding of CyaY. (B) At high iron concentrations, the system becomes under the control of CyaY.
