Question 17.SP.5: Codons What is the sequence of amino acids specified by the ......

Chemistry: An Introduction to General, Organic, and Biological Chemistry [1013382]

Codons
What is the sequence of amino acids specified by the following codons in mRNA?
— GUC — AGC — CCA —

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According to Table 17.4, GUC codes for valine, AGC for serine, and CCA for proline. The sequence of amino acids is Val–Ser–Pro.

TABLE 17.4 Codons in mRNA: The Genetic Code for Amino Acids
Second Letter
First Letter	U	C	A	G	Third Letter
U	$\left. \begin{matrix} UUU \\ UUC \end{matrix} \right\}Phe$	$\left. \begin{matrix} UCU \\UCC \\ UCA \\UCG \end{matrix} \right\}Ser$	$\left. \begin{matrix} UAU \\ UAC \end{matrix} \right\}Tyr$	$\left. \begin{matrix} UGU \\ UGC \end{matrix} \right\}Cys$	U
					C
	$\left. \begin{matrix} UUA \\ UUG \end{matrix} \right\}Leu$		**UAA Stop	**UGA Stop	A
			**UAG Stop	UGG Trp	G
C	$\left. \begin{matrix} CUU \\CUC \\ CUA \\CUG \end{matrix} \right\}Leu$	$\left. \begin{matrix} CCU \\CCC \\ CCA \\CCG \end{matrix} \right\}Pro$	$\left. \begin{matrix} CAU \\CAC \end{matrix} \right\}His$	$\left. \begin{matrix} CGU \\CGC \\ CGA \\CGG \end{matrix} \right\}Arg$	U
					C
			$\left. \begin{matrix} CAA \\CAG \end{matrix} \right\}Gln$		A
					G
A	$\begin{matrix} {\left. \begin{matrix} AUU \\AUC \\ AUA \end{matrix} \right\}IIe} \\ *AUG\, Met/Start \end{matrix}$	$\left. \begin{matrix} ACU \\ACC \\ ACA \\ACG \end{matrix} \right\}Thr$	$\left. \begin{matrix} AAU \\AAC \end{matrix} \right\}Asn$	$\left. \begin{matrix} AGU \\ AGC \end{matrix} \right\}Ser$	U
					C
			$\left. \begin{matrix} AAA \\AAG \end{matrix} \right\}Lys$	$\left. \begin{matrix} AGA \\ AGG \end{matrix} \right\}Arg$	A
					G
G	$\left. \begin{matrix} CUU \\GUC \\ GUA \\GUG \end{matrix} \right\}Val$	$\left. \begin{matrix} GCU \\GCC \\ GCA \\GCG \end{matrix} \right\}Ala$	$\left. \begin{matrix} GAU \\GAC \end{matrix} \right\}Asp$	$\left. \begin{matrix} GGU \\GGC \\ GGA \\GGG \end{matrix} \right\}Gly$	U
					C
			$\left. \begin{matrix} GAA \\GAG \end{matrix} \right\}Glu$		A
					G

*Codon that signals the start of a peptide chain.
**Stop codons signal the end of a peptide chain.

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