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.
Rotamer conformations of Y263 with and without Na+. Distribution of the dihedral angle of Y263 with Na+ present (blue) or absent (green) from the Na2 site. The Na2 site is categorized as being occupied if any Na+ ion in the simulation box is within 4.5 Å of the either oxygen atom in the carboxyl group of D189. It is difficult to distinguish between the distributions due to the high degree of overlap.
