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. Author manuscript; available in PMC: 2018 Jul 6.
Published in final edited form as: C R Chim. 2010 Aug 7;14(4):372–387. doi: 10.1016/j.crci.2010.06.013

Figure 9.

Figure 9

Putting a synthetic base into a messenger RNA, and providing a transfer RNA having the complementary non-standard base in the anticodon loop (the “N”) allowed the incorporation of a 21st amino acid (here, iodotyrosine) into a protein.