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Hsp90NMR

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The study of Hsp90 through the use of nuclear magnetic resonance small angle sc...

The study of Hsp90 through the use of nuclear magnetic resonance small angle scattering and calorimetry Proper protein folding is essential for cellular homeostasis. Cells employ a large array of chaperones to ensure protein adopt the proper conformation. Hsp90 is an important chaperone and comprises of 1-2% of all protein is eukar... ver más

31/01/2015

HMGU

167K€

Presupuesto del proyecto: 167K€

Líder del proyecto

HELMHOLTZ ZENTRUM MUENCHEN DEUTSCHES FORSCHUN... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2015-01-31 No tenemos la información de la convocatoria

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HMGU

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Líder del proyecto

HELMHOLTZ ZENTRUM MUENCHEN DEUTSCHES FORSCHUN... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 167K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Proper protein folding is essential for cellular homeostasis. Cells employ a large array of chaperones to ensure protein adopt the proper conformation. Hsp90 is an important chaperone and comprises of 1-2% of all protein is eukaryotic cells. Additionally, Hsp90 is upregulated in cancerous cells to facilitate fast proliferation. There are several X-ray crystal structures available for Hsp90 free in solution and interacting with its target proteins. This combined with small angle x-ray/neutron scattering (SAXS/SANS) and Förster resonance energy transfer (FRET) data, demonstrate that HSP90 is a 90 kDa dimeric protein and undergoes large conformational changes throughout its function. However, these crystal structures only provide a static picture of Hsp90 function so the molecular and dynamic details of these rearrangements are not well understood. We will employ nuclear magnetic resonance spectroscopy (NMR) as a method to further probe these changes. NMR can provide atomically resolved real time information of Hsp90 in solution either free or interacting with its targets. Hsp90 contains three distinct domains, and we have individually isotopically label each domain. This will allow each domain to be studied either independently or and in tandem with neighbouring domains. Also a target protein, the glucocorticoid receptor (GR) protein, will be introduced to observe how the behaviour of each domain changes upon binding a client protein. Through observing the changes in chemical shifts and relaxation rates we will be able to identify specific regions in Hsp90 which are involved in the binding of client proteins. We will also employ SAXS/SANS experiments to observe changes in orientation of the domains when interacting with the GR protein, and use isothermal titration calorimetry to determine the thermodynamic parameters of Hsp90 binding the GR protein. Through combining all of these techniques we hope to gain a broader understanding of Hsp90 function.

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