Metallothionein protects against the cytotoxic and DNA-damaging effects of nitric oxide.

Abstract excerpt

In inflammatory states, nitric oxide (.NO) may be synthesized from precursor L-arginine via inducible .NO synthase (iNOS) in large amounts for prolonged periods of time. When .NO acts as an effector molecule under these conditions, it may be toxic to cells by inhibition of iron-containing enzymes or initiation of DNA single-strand breaks. In contrast to molecular targets of .NO, considerably less is known...

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