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RSS FeedsSolution NMR studies reveal no global flexibility in the catalytic domain of CDC25B (Proteins: Structure, Function, and Bioinformatics)

 
 

17 april 2014 10:14:27

 
Solution NMR studies reveal no global flexibility in the catalytic domain of CDC25B (Proteins: Structure, Function, and Bioinformatics)
 


The CDC25B phosphatase is a critical regulator of the cell cycle and has been validated as an important therapeutic target in cancer. Previous studies using molecular dynamics simulations have concluded that the catalytic domain of CDC25B may experience a significant degree of dynamics or be partially disordered in solution, a finding that has a pronounced impact on the structure-based development of CDC25B inhibitors. We have probed the backbone dynamics of the CDC25B catalytic domain in solution using NMR relaxation experiments and found that the core of the protein is relatively rigid and does not experience any large-scale dynamics over a broad range of time scales. Furthermore, based on RDC measurements we have concluded that the conformation in solution is very similar to that observed in the crystal form. Importantly, these findings rationalize the application of the CDC25B crystal structure in structure-based drug development. © Proteins 2014;. © 2014 Wiley Periodicals, Inc.


 
174 viewsCategory: Biochemistry, Bioinformatics
 
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