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.
Substitutions and deletions of E. coli GlnD mutants. The location of each domain is indicated by the amino acid residue numbers. The positions of the replaced conserved residues in the NT and HD domains are indicated by the dots shown on the top line of the figure. E. coli strains are indicated in parenthesis.
