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This movement is important for maintaining the stability of the mitochondrial #DNA, which is the genetic material found in mitochondria, and for controlling the cell's #respiration. It can also be involved in programmed #CellDeath. In the #heart, mitochondrial dynamics #protein s, such as #mitofusin s, optic #atrophy, and dynamin-related protein, are highly expressed and play an important role in maintaining the quality of the #mitochondria.