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Small molecules mimic natural gene regulators
Date:6/3/2009

ry that natural activators did.

In the current work, the team showed that their ATFs bind to a protein called CBP, which interacts with many natural activators, and that the specific site where their ATFs bind is the same site utilized by the natural activators, even though the natural activators are much larger and more complex.

Then the researchers altered their ATFs in various ways and looked to see how those changes affected both binding and ability to function as transcriptional activators. Any change that prevented an ATF from binding to CBP also prevented it from doing its job. This suggests that, for ATFs as for natural activators, interaction with CBP is key to transcriptional activity.

"Taken together, the evidence suggests that the small molecules we have developed mimic both the function and the mechanism of their natural counterparts," said Mapp, who has a joint appointment in the College of Pharmacy's Department of Medicinal Chemistry. Next the researchers want to understand in more detail exactly how the small molecules bind to that site. "Then we'll use that information to design better molecules."


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Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
Source:Eurekalert

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