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HIV researchers solve key puzzle after 20 years of trying
Date:1/31/2010

for crystallization. Despite initially painstakingly slow progress and very many failed attempts, we did not give up and our effort was finally rewarded."

After growing the crystals in the lab, the researchers used the giant synchrotron machine at the Diamond Light Source in South Oxfordshire to collect X-ray diffraction data from these crystals, which enabled them to determine the long-sought structure. The researchers then soaked the crystals in solutions of the integrase inhibiting drugs Raltegravir (also known as Isentress) and Elvitegravir and observed for the first time how these antiretroviral drugs bind to and inactivate integrase.

The new study shows that retroviral integrase has quite a different structure to that which had been predicted based on earlier research. Availability of the integrase structure means that researchers can begin to fully understand how existing drugs that inhibit integrase are working, how they might be improved, and how to stop HIV developing resistance to them.


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Contact: Laura Gallagher
l.gallagher@imperial.ac.uk
44-020-759-48432
Imperial College London
Source:Eurekalert

Page: 1 2

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