摘要
Manganese （Mn） plays a wealth of roles in living systems. It is ubiquitously involved in the antioxidant response because of its ability to catalyze the dismutation of superoxide anions. In eukaryotic cells, Mn also plays a role in protein glycosylation in the secretory system. However, arguably, in photosynthetic organisms, the most important role of Mn is in the oxygen evolving complex at photosystem IL （PS Ⅱ）. Atthe global level, atmospheric oxygen is derived from the splitting of water, a reaction that relies strictly on the tetra-manganese cluster （Mn405Ca） bound to photosystem II at the lumen side of the thylakoid membrane.
Manganese （Mn） plays a wealth of roles in living systems. It is ubiquitously involved in the antioxidant response because of its ability to catalyze the dismutation of superoxide anions. In eukaryotic cells, Mn also plays a role in protein glycosylation in the secretory system. However, arguably, in photosynthetic organisms, the most important role of Mn is in the oxygen evolving complex at photosystem IL （PS Ⅱ）. Atthe global level, atmospheric oxygen is derived from the splitting of water, a reaction that relies strictly on the tetra-manganese cluster （Mn405Ca） bound to photosystem II at the lumen side of the thylakoid membrane.
