Tag Archives: proteasomes

Scientists discover new way protein degradation is regulated

Researchers at The Rockefeller University and the Howard Hughes Medical Institute have identified the mechanism by which the cell’s protein recycler, the proteasome, ramps up its activity to take care of unwanted and potentially toxic proteins. The finding, which has implications for treating muscle wasting and neurodegeneration, also suggests that small molecule inhibitors of this mechanism may be clinically useful in treating multiple myeloma. More »

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Analysis of sperm differentiation reveals new mode of proteasome regulation

The proteasome plays a key role in the differentiation of specialized cells and in maintaining them as they age. The ability to manipulate the proteasome has already been useful in the treatment of multiple myeloma; it could help treat other cancers and degenerative disorders including Parkinson’s and Alzheimer’s as well. New research identifies a key protein, called DmPI31, that regulates the proteasome, which could provide researchers a handle for using it to good medical effect. “Controlled proteolysis is essential for many cell biological functions,” says Hermann Steller, head of the Strang Laboratory of Apoptosis and Cancer Biology. “There had been the impression that the proteasome is just a brute ‘shredder,’ but it doesn’t run at full steam all the time. It’s modulated, and these findings give us new ideas for designing small molecules that regulate proteasome activity.” More »

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