Function
Sarcosine dehydrogenase is one of the enzymes in sarcosine metabolism, which catalyzes the demethylation of sarcosine to make glycine. It is preceded by dimethylglycine dehydrogenase which turns dimethylglycine into sarcosine. Glycine can also be turned into sarcosine by glycine N-methyltransferase. Since glycine is the production of sarcosine dehydrogenase catalyzed reaction, aside from sarcosine metabolism, the enzyme is also indirectly connected to the creatine cycle and the respiratory chain in the mitochondria (See figure 4 for pathway). Even so, the biological significance of sarcosine dehydrogenase beyond sarcosine metabolism is not entirely known. In a study of hereditary hemochromatosis using both wild type and HFE (gene) deficient mice fed with 2 percent carbonyl iron supplemented diet, sarcosine dehydrogenase was shown to be down-regulated in HFE deficient mice, but role sarcosine dehydrogenase in iron metabolism is unknown from the experiment conducted.
Read more about this topic: Sarcosine Dehydrogenase
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