| Assay Method Information | |
| | Inhibition Assay |
| Description: | In the design of clinically safe and effective metalloenzyme inhibitors, use of the most appropriate metal-binding group for the particular target and clinical indication is critical. If a weakly binding metal-binding group is utilized, potency may be suboptimal. On the other hand, if a very tightly binding metal-binding group is utilized, selectivity for the target enzyme versus related metalloenzymes may be suboptimal. The lack of optimal selectivity can be a cause for clinical toxicity due to unintended inhibition of these off-target metalloenzymes. One example of such clinical toxicity is the unintended inhibition of human drug metabolizing enzymes such as CYP2C9, CYP2C19 and CYP3A4 by the currently-available prostate anticancer agent ketoconazole. It is believed that this off-target inhibition is caused primarily by the indiscriminate binding of the currently utilized 1-imidazole to iron in the active site of CYP2C9, CYP2C19 and CYP3A4. |
| Affinity data for this assay | |
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