n methylhydantoin

N-Methylhydantoin (1-Methyl-hydantoin) is a small molecular weight polar substance, the product of degradation of creatinine by bacteria. In mammals, the Metabolism of N-Methylhydantoin occurs via 5-hydroxy-1-methylhydantoin. In a reported human case,N-Methylhydantoin was found as an unexpected metabolite of the intelligence-affecting substance dupracetam.

N-Methylhydantoinase (ATP-hydrolyzing) from Arthrobacter sp. is an enzyme belonging to the hydrolase family, which acts on carbon-nitrogen bonds other than peptide bonds, particularly in cyclic amides. This enzyme is involved in the metabolism of arginine, creatinine, and proline. Its three substrates are ATP, N-methylimidazolidine-2,4-dione, and water, while its three products are ADP, phosphate, and N-carbamoylsarcosine.