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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Anthraflavic acid is a potent and specific inhibitor of cytochrome P-448 activity.

Consideration of the computer-optimised dimensions of anthraflavic acid indicates that it is essentially a planar molecule with a large area/depth ratio, that would preferentially interact with the polycyclic aromatic hydrocarbon-induced family of cytochrome P-450 proteins (cytochromes P-448). Anthraflavic acid was a potent inhibitor of the O-deethylations of ethoxycoumarin and ethoxyresorufin, both catalysed primarily by cytochromes P-448, in Arochlor-1254-induced hepatic microsomes. Similarly anthraflavic acid markedly inhibited the mutagenicity of 2-amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole (Glu-P-I) in the Ames test. In contrast, it has no effect on the dealkylation of pentoxyresorufin, a reaction catalysed primarily by the phenobarbital-induced cytochromes P-450, and NADPH-dependent reduction of cytochrome c. It is concluded that anthraflavic acid is a potent and specific inhibitor of cytochrome P-448 activity.[1]

References

  1. Anthraflavic acid is a potent and specific inhibitor of cytochrome P-448 activity. Ayrton, A.D., Lewis, D.F., Ioannides, C., Walker, R. Biochim. Biophys. Acta (1987) [Pubmed]
 
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