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We have previously demonstrated that RNA interference-mediated suppression of xanthine dehydrogenase (XDH), the rate-limiting enzyme in purine degradation, causes defects in the normal growth and development of Arabidopsis thaliana. Here, we investigated a possible role for XDH in drought tolerance, since this enzyme is also implicated in plant stress responses and acclimatization. When XDH-suppressed...
The 70S ribosome from Escherichia coli is a supermacro complex (MW: 2.7MDa) comprising three RNA molecules and more than 50 proteins. We have for the first time successfully analyzed the flexibility of 70S ribosomal proteins in solution by detecting the hydrogen/deuterium exchange with mass spectrometry. Based on the deuterium incorporation map of the X-ray structure obtained at the time of each exchange,...
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