However, an INMT located in rabbit lung was proven to have a much larger Km (270 uM, Thompson and Weinshilboum, 1998; 340 uM, Raisanen and Karkkainen, 1978) than the Mind enzyme in rats. This advised that INMT could exist in various isoenzyme sorts in between species and possibly even inside the similar animal, each having distinct Km's and substra