What sequence of amino acids would be formed from the following mRNA sequence:
CAA AAG ACG UAC CGA? List the anticodons contained in each of the needed tRNA molecules.
Analysis
Use Table 17.3 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.
able 17.3 The Genetic Code—Triplets in Messenger RNA
Third Base (3′ end) |
Second Base | First Base (5′ end) |
|||||||
G | A | C | U | ||||||
U | Cys | UGU | Tyr | UAU | Ser | UCU | Phe | UUU | U |
C | Cys | UGC | Tyr | UAC | Ser | UCC | Phe | UUC | |
A | Stop | UGA | Stop | UAA | Ser | UCA | Leu | UUA | |
G | Trp | UGG | Stop | UAG | Ser | UCG | Leu | UUG | |
U | Arg | CGU | His | CAU | Pro | CCU | Leu | CUU | C |
C | Arg | CGC | His | CAC | Pro | CCC | Leu | CUC | |
A | Arg | CGA | Gln | CAA | Pro | CCA | Leu | CUA | |
G | Arg | CGG | Gln | CAG | Pro | CCG | Leu | CUG | |
U | Ser | AGU | Asn | AAU | Thr | ACU | Ile | AUU | A |
C | Ser | AGC | Asn | AAC | Thr | ACC | Ile | AUC | |
A | Arg | AGA | Lys | AAA | Thr | ACA | Ile | AUA | |
G | Arg | AGG | Lys | AAG | Thr | ACG | Met | AUG | |
U | Gly | GGU | Asp | GAU | Ala | GCU | Val | GUU | G |
C | Gly | GGC | Asp | GAC | Ala | GCC | Val | GUC | |
A | Gly | GGA | Glu | GAA | Ala | GCA | Val | GUA | |
G | Gly | GGG | Glu | GAG | Ala | CGG | Val | GUG |