Anthrax Protective Antigen Green Chrome Plated Enamel Pin, 2.5"

Anthrax Protective Antigen is the delivery mechanism for Anthrax toxins by Bacillus anthracis. After binding to receptors on the cell surface to form a seven-subunit ring, it facilitates the movement of toxins across the cell membrane and the eventual delivery lethal factor and edema factor into the cell.