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. 2010 Sep 1;41(3):805–809. doi: 10.1590/S1517-83822010000300033

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Figure 2. — Possible mechanisms of the duality in functions of silver nitrate in bacteria. A - The left side of the figure shows the possible mechanism of silver nanoparticle synthesis at lower concentration which may involve nitrate reductase enzyme. B - The right side of the figure shows the possible mechanism for the induction of apoptosis by silver nitrate which may involve inactivation of thiol group containing proteins (e. g. NADH dehydrogenase II) and direct binding of silver to DNA thus stopping replication that certainly leading to apoptosis.