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. 2013 Dec 11;42(5):3409–3418. doi: 10.1093/nar/gkt1279

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© The Author(s) 2013. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 6. — (a) Superimposition onto domain C of eRF1 in the crystal structure (7) (PDBID: 1DT9) and bound to the pre-TC ribosome. The mini-domain is not displayed for clarity. (b) Comparison between the positions of eRF1-M in the eRF1-eRF3-ribosome structure, the eRF1-eRF3_2–3 (15) (PDBID: 3E1Y) and the eRF1 (7) (PDBID: 1DT9) crystal structures with their domain C superimposed. Position of the P-site tRNA in the context of the pre-termination complex is shown to compare the distance necessary to be travelled for the GGQ loop to reach the peptidyl transfer center (PTC) with the amplitude of movement between the different conformations of eRF1 observed. Only the N domain of eRF1 in the pre-TC cryo-EM structure is shown for clarity.