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Figure 2 | Biology Direct

Figure 2

From: The origin and evolution of the ribosome

Figure 2

The secondary structure of the PTC as defined by Polacek and Mankin (2005). The equivalent base numbering is given by identifying A2451 with A2486 in reference structure 1S72.pdb. The arrows point to the helices forming the "base" of the PTC seen in Fig. 3.

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