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.
Surface representation of the crystal structures of GSTs A4-4 (PDB ID: 1GUL), A1-1 (PDB ID: 1K3L), and P1-1 (PDB ID: 9GSS) showing locations of nucleophilic residues cysteine (yellow), lysine (red with nitrogen atoms colored blue) and histidine (green with nitrogen atoms colored blue).
