Given the mRNA sequence GGU-GCU-CCU-AUU what would be the portion of the protein molecule coded for by the mRNA sequence above? Gly-Ala-Gly-lle Pro-Arg-Gly-lle Pro-Arg-Gly Gly-Ala-Pro-lle

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  • Pengguna Brainly
2016-03-25T07:40:16+08:00

The reason for the occurrence of different wobble-pairs encoding the same amino acid may be due to a compromise between velocity and safety in protein synthesis. The redundancy of mRNA codons exist to prevent mistakes in transcription caused by mutations or variations at the 3rd position but also at other positions. For example, the first position of the leucine codons (UCA, UCC, CCU, CCC, CCA, CCG) is a twofold degenerate site, while the second position is unambiguous (not redundant). Another example is serine with mRNA codons UCA, UCG, UCC, UCU, AGU, AGC. Of course, serine is also twofold degenerate at the first position and fourfold degenerate at the third position, but it is twofold degenerate at the second position in addition. Table 4 shows the assignment of mRNA codons to any possible tRNA anticodon in eukaryotes for the 20 standard amino acids involved in translation. It is the reverse codon assignment.


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