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Alberts B, Bray D, Lewis J, et al. Molecular Biology of the Cell. 3rd edition. New York: Garland Science; 1994.

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Cover of Molecular Biology of the Cell

Molecular Biology of the Cell. 3rd edition.

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Figure 6-14. The genetic code is translated by means of two sequential "adaptors".

Figure 6-14The genetic code is translated by means of two sequential "adaptors"

The first adaptor is the aminoacyl-tRNA synth-etase enzyme, which couples a par-ticular amino acid to its correspond-ing tRNA; the second adaptor is the tRNA molecule, whose anticodon forms base pairs with the appropriate nucleotide sequence (codon) on the mRNA. An error in either step will cause the wrong amino acid to be incorporated into a protein chain.

From: RNA and Protein Synthesis

Copyright © 1994, Bruce Alberts, Dennis Bray, Julian Lewis, Martin Raff, Keith Roberts, and James D Watson.

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