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netLibrary - eBook Summary Structure-based Drug Design by ...

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day junction resolving enzyme [38], and also the core domain of the phage MuA transposase [39] (see<br />

Figure 7). In the case of HIV-1 integrase, RNase H, and RuvC, definite three-dimensional similarity<br />

extends only to the ends of the last β strand; from this point, the structures diverge. In HIV-1 RNase H,<br />

there is only one more α helix corresponding to helix D in the HIV-1 integrase core but in a 40°<br />

different orientation. In RuvC there are three more helices, with the last one running parallel to helix D<br />

of HIV-1 integrase, but in the opposite direction and also 4.6 Å closer to the β sheet. In contrast, the<br />

homology between HIV-1 inte-<br />

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