Genetics: Animal and Human Cytochrome P450 Polymorphisms

  • A. K. Daly
  • J. R. Idle
Part of the Handbook of Experimental Pharmacology book series (HEP, volume 105)


There is now considerable evidence for wide interindividual variation in cytochrome P450 activity in both humans and animals. This variation may be due to a genetic polymorphism which results in either lack of protein synthesis or synthesis of a protein with reduced enzyme activity or to variation in the level of cytochrome P450 gene expression due to regulation by factors such as hormones or xenobiotics. In this chapter, the effect of polymorphisms in cytochrome P450 genes on enzyme activity in the microsomal drug-metabolising cytochrome P450 families 1 to 3 will be considered.


Poor Metabolisers Restriction Fragment Length Polymorphism Analysis Dark Agouti Cytochrome P450 Gene Human Liver Cytochrome 
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© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • A. K. Daly
  • J. R. Idle

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