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Question 22.8: What sequence of amino acids would be formed from the follow...

What sequence of amino acids would be formed from the following mRNA sequence: 5 ‘ CAA AAG ACG UAC CGA 3 ‘ ? List the anticodons contained in each of the needed tRNA molecules.

Analysis

Use Table 22.3 to determine the amino acid that is coded for by each codon. The anticodons contain complementary bases to the codons: A pairs with U, and C pairs with G.

Table 22.3 The Genetic Code—Triplets in Messenger RNA
First Base (5′ end) Second Base Third Base (3′ end)
U C A G
U UUU Phe UCU Ser UAU Tyr UGU Cys U
UUC Phe UCC Ser UAC Tyr UGC Cys C
UUA Leu UCA Ser UAA Stop UGA Stop A
UUG Leu UCG Ser UAG Stop UGG Trp G
C CUU Leu CCU Pro CAU His CGU Arg U
CUC Leu CCC Pro CAC His CGC Arg C
CUA Leu CCA Pro CAA Gln CGA Arg A
CUG Leu CCG Pro CAG Gln CGG Arg G
A AUU Ile ACU Thr AAU Asn AGU Ser U
AUC Ile ACC Thr AAC Asn AGC Ser C
AUA Ile ACA Thr AAA Lys AGA Arg A
AUG Met ACG Thr AAG Lys AGG Arg G
G GUU Val GCU Ala GAU Asp GGU Gly U
GUC Val GCC Ala GAC Asp GGC Gly C
GUA Val GCA Ala GAA Glu GGA Gly A
GUG Val GCG Ala GAG Glu GGG Gly G
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22.8

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