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To closely examine magnesiumâs importance to the heart muscle, we have to pull out our microscopesâyes, it gets right down to the cellular and even the molecular level. Magnesium plays an essential role in many of the functions of energy production itself.It is an integral part of the energy (ATP) and protein (enzymes-as co-factor and as a structural component of the muscle protein, myosin) moleculesâwithout which the energy to contract and relax the heart does not occur properly.o closely examine magnesiumâs importance to the heart muscle, we have to pull out our microscopesâyes, it gets right down to the cellular and even the molecular level. Magnesium plays an essential role in many of the functions of energy production itself.
Magnesium is a trace metal needed in the diet that plays an essential role in energy use in the cell and in copying the cellâs genetic material. The bodyâs cells use a molecule called ATP to fuel most of the processes that take place.