Title : Digging Deeper into CYP3A Testosterone Metabolism: Kinetic, Regioselectivity, and Stereoselectivity Differences between CYP3A4/5 and CYP3A7.

Pub. Date : 2017 Dec

PMID : 28986474






4 Functional Relationships(s)
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1 In CYP3A4, the most energetically favorable docking mode places testosterone in a position with the methyl groups directed toward the heme iron, which is more favorable for oxidation at C6beta, whereas for CYP3A7 the testosterone methyl groups are positioned away from the heme, which is more favorable for an oxidation event at C2alpha In conclusion, our data indicate an alternative binding mode for testosterone in CYP3A7 that favors the 2alpha-hydroxylation, suggesting significant structural differences in its active site compared with CYP3A4/5. Heme cytochrome P450 family 3 subfamily A member 4 Homo sapiens
2 In CYP3A4, the most energetically favorable docking mode places testosterone in a position with the methyl groups directed toward the heme iron, which is more favorable for oxidation at C6beta, whereas for CYP3A7 the testosterone methyl groups are positioned away from the heme, which is more favorable for an oxidation event at C2alpha In conclusion, our data indicate an alternative binding mode for testosterone in CYP3A7 that favors the 2alpha-hydroxylation, suggesting significant structural differences in its active site compared with CYP3A4/5. Heme cytochrome P450 family 3 subfamily A member 4 Homo sapiens
3 In CYP3A4, the most energetically favorable docking mode places testosterone in a position with the methyl groups directed toward the heme iron, which is more favorable for oxidation at C6beta, whereas for CYP3A7 the testosterone methyl groups are positioned away from the heme, which is more favorable for an oxidation event at C2alpha In conclusion, our data indicate an alternative binding mode for testosterone in CYP3A7 that favors the 2alpha-hydroxylation, suggesting significant structural differences in its active site compared with CYP3A4/5. Heme cytochrome P450 family 3 subfamily A member 4 Homo sapiens
4 In CYP3A4, the most energetically favorable docking mode places testosterone in a position with the methyl groups directed toward the heme iron, which is more favorable for oxidation at C6beta, whereas for CYP3A7 the testosterone methyl groups are positioned away from the heme, which is more favorable for an oxidation event at C2alpha In conclusion, our data indicate an alternative binding mode for testosterone in CYP3A7 that favors the 2alpha-hydroxylation, suggesting significant structural differences in its active site compared with CYP3A4/5. Heme cytochrome P450 family 3 subfamily A member 4 Homo sapiens