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What is IA1, Cytochrome P450?

    A cytochrome P-450 enzyme capable of activating procarcinogenic polycyclic hydrocarbons and halogenated aromatic hydrocarbons into mutagenic compounds. Ethoxyresorufin acts as a substrate for CYP1A1 and measurement of ethoxyresorufin O-deethylase provides a more direct method of detection for this enzyme. EC 1.-.