The DEFA3/defensin alpha 3 protein is a potent effector in innate immunity against a variety of infectious agents, including bacteria, fungi, and viruses. It neutralizes bacterial toxins, such as Bacillus anthracis lethal factor and Staphylococcus aureus leukocidin, and plays a key role in blocking herpes simplex virus infection by preventing viral attachment. DEFA3/Defensin alpha 3 Protein, Human (HEK293, Fc) is the recombinant human-derived DEFA3/Defensin alpha 3 protein, expressed by HEK293 , with N-hFc labeled tag.