Creatine metabolism (Homo sapiens)
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Description
In humans, creatine is synthesized primarily in the liver and kidney, from glycine, arginine, and S-adenosylmethionine, in a sequence of two reactions. From the liver, creatine is exported to tissues such as skeletal muscle and brain, where it undergoes phosphorylation and serves as a short-term energy store. The mechanism by which creatine leaves producer tissues is unclear, but its uptake by consumer tissues is mediated by the SLC6A8 transporter.
Once formed, phosphocreatine undergoes a slow spontaneous reaction to form creatinine, which is excreted from the body. View original pathway at Reactome.</div>
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