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. 2012 Mar 2;31(7):1836–1846. doi: 10.1038/emboj.2012.22

Figure 4.

Figure 4

Positions of domains IV and V of EF-G in the presence and absence of ttRRF on the ribosome. (A) Corresponding cryo-EM densities of domains IV and V of EF-G in complex 2 (orange) and the 70S·EF-G·GDP·FA complex (semitransparent green (Datta et al, 2005)) are superimposed. (B) Same as in panel A, but the transparency has been switched to reveal marked shifts in the position of EF-G domains. Dashed and solid circles in (A, B) highlight the equivalent positions in semitransparent and solid densities. (C) Flexibly fitted coordinates of EF-G domains IV and V into the maps shown in (A) are superimposed. Arrows depict the direction and magnitude of shifts in EF-G domains as compared with their positions in the absence of ttRRF. C, C-terminal α-helix.