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.
Two modes of terminal azide bindings to Fea3 at 20 mm azide. A and B, atomic model of terminally-bound azide ions. Azide 1 and azide 2 in dark blue indicate azide ions bound to CuB and heme a3, respectively. Heme a3 planes giving structures A and B are drawn in magenta and light blue, respectively. C and D, geometry of bindings of azide 2 giving structures A and B, respectively, in the same color-code as in A and B.
