Copper-zinc superoxide dismutase (Cu-Zn SOD) is an important enzyme found in many living organisms. It plays a crucial role in protecting cells from oxidative stress by converting harmful superoxide radicals into less harmful molecules, such as hydrogen peroxide and oxygen. This process helps maintain cellular health and prevents damage caused by free radicals. The enzyme is composed of two metal ions: copper and zinc, which are essential for its activity. Cu-Zn SOD is primarily located in the cytoplasm of cells and is vital for various biological processes, including aging and inflammation. Its proper functioning is linked to overall cellular well-being.