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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Overproduction, crystallization and preliminary X-ray diffraction analysis of a quinone oxidoreductase from Thermus thermophilus HB8.

A probable quinone oxidoreductase (MW = 32.1 kDa) from Thermus thermophilus HB8 was overproduced in Escherichia coli and purified. Gel-filtration chromatography suggested the protein to be in a dimeric state. This protein enhanced the reduction activity of quinones by NADPH. It was crystallized in the absence and the presence of NADPH by the hanging-drop vapour-diffusion method. Both crystals were hexagonal, space group P6(1)22 or P6(5)22, with unit-cell parameters a = b = 77.6, c = 236.7 A for the apo form and a = b = 77.6, c = 235.9 A for the complex with NADPH. They diffract to better than 2.3 A resolution with synchrotron radiation. The asymmetric unit has one protein subunit (V(M) = 3.2 A(3) Da(-1) and V(sol) = 0.62 for the apo form), indicating that the twofold axis of the dimeric protein and the crystallographic twofold axis coincide.[1]

References

  1. Overproduction, crystallization and preliminary X-ray diffraction analysis of a quinone oxidoreductase from Thermus thermophilus HB8. Shimomura, Y., Sumiguchi-Agari, K., Masui, R., Kuramitsu, S., Fukuyama, K. Acta Crystallogr. D Biol. Crystallogr. (2002) [Pubmed]
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