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Figure 4.
Fig. 4. Jaws. (A) Stereoview of structural elements
constituting the jaws (left) and the location of these elements
within pol II (right). (B) Mobility of the larger,
NH[2]-terminal domain of Rpb5. Backbone models of free Rpb5
[gray (47)] and Rpb5 in pol II (pink) are shown with their
smaller, COOH-terminal domains superimposed. (C) Conservation of
amino acid residues of Rpb5.
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