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Structural biology

Steps in the right direction

The ring-shaped helicase enzyme Rho moves along RNA using ATP as an energy source. Coordinating ATP hydrolysis with nucleic-acid binding seems to determine the direction and mechanism of helicase movement.

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Figure 1: Structure of the Rho hexameric helicase.
Figure 2: Two models of hexameric helicase nucleic-acid translocation.

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Patel, S. Steps in the right direction. Nature 462, 581–583 (2009). https://doi.org/10.1038/462581a

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