NCIt related terms : cytochrome P450 enzyme system;
NCIt definition : A family of cytochromes that are involved in electron transport and oxidative metabolism
of drugs and other bioactive molecules. When the catalytic heme is reduced the absorbance
peak for this protein occurs at 450 nm.;
Alternative definition : NCI-GLOSS: A group of enzymes involved in drug metabolism and found in high levels
in the liver. These enzymes change many drugs, including anticancer drugs, into less
toxic forms that are easier for the body to excrete.;