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. Author manuscript; available in PMC: 2010 Mar 5.
Published in final edited form as: Q Rev Biophys. 2009 Aug;42(3):159–200. doi: 10.1017/S0033583509990060

Fig. 22.

Fig. 22

The A1338-790 ridge in the hybrid ribosome. The ASL of the hybrid P/E tRNA interacts with the small subunit head, near the G1338-U1341 ridge, as well as with the small subunit body, via the A790 loop of the 18S rRNA. Before the head of the small subunit rotates, the distance between A790 in the body and A1339 in the head of the small subunit is ~18 Å.