Thus, the two substrates of this enzyme are creatine and H2O, whereas its two products are sarcosine and urea. The native enzyme was shown to be made up of two subunit monomers via SDS-polyacrylamide gel electrophoresis. The molecular weights of these subunits was estimated to be 47,000 g/mol. The enzyme works as a homodimer, and is induced by cho... Found on http://en.wikipedia.org/wiki/Creatinase