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'''Glutathione synthetase''' (GSS) is an homo-dimeric, ATP-depending ligase responsible for the condensation of γ-Glutamylcysteine and glycine to form Glutathione during the second step of the glutathione biosynthesis pathway. Glutathione considered to be one of the most abundant and important antioxidants present in mammalian cells. In addition to protecting cells from the oxidative damage caused by free radicals, it is believed to be involved in the detoxification of xenobiotics, as well as membrane transport. Below, the direct enzyme catalysis step is shown in addition to the entire glutathione biosynthesis pathway and GSS's role in such a cycle. | |||
[[Image:cycle.jpg]] | |||
