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Scientists locate disease switches
Date:7/20/2009

New perspectives in the treatment of disease

The team, led by Professor Matthias Mann of Novo Nordisk Center for Protein Research at the University of Copenhagen and the Max Planck Institute for Biochemistry in Germany, have detected 3,600 acetylation switches in 1,750 different proteins.

"This is more than just a technological achievement, it has also expanded the number of known acetylation switches by a factor of six, and it gives us for the first time a comprehensive insight into this type of protein modification," says Professor Mann.

A given protein can perform more than one task, and how it behaves is regulated by adding a small molecule that acts as a 'switch' which can turn on the different tasks. Acetylation is essential for cells' ability to function normally. Defective protein regulation plays a role in ageing and the development of diseases such as cancer, Parkinson's and Alzheimer's.

"With the new mapping, we can now begin to study and describe how acetylation switches respond to medications that could repair the defects on them. It can have a major impact on medical care," says Professor Mann, adding that medications to repair the damaged protein regulation are already showing promising in the treatment of cancer.

Cooperating proteins

The team also discovered that acetylation modification occurs primarily on proteins that work together, and that these switches have much greater consequences for the organism's function than previously thought. In one example, the function of Cdc28, an important growth protein in yeast, can be disrupted by the addition of an acetylation button, ultimately affecting the organism's ability to survive.


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Contact: Professor Matthias Mann
Matthias.Mann@cpr.ku.dk
49-175-418-6313
University of Copenhagen
Source:Eurekalert

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