Q. 17.111 - An Introduction to General, Organic, and Biological Chemistry

Question

What is the amino acid for each of the following codons?

a. AAG b. AUU c. CGA

Step-by-Step Solution

Answer

a. Lysine is the amino acid for AAG codon.

b. Isoleucine is the amino acid for AUU codon.

c. Arginine is the amino acid for CGA codon.

Part(a) Step 1:Given information

We have to find out the what is the amino acid for AAG codons. 

Part(a) Step 2:Explanation

We know that,

Codons are made up of three letters that are joined to make code "words." Unless it codes for a start or stop signal, each codon represents (encodes) one amino acid.

The codons AAA and AAG code for it. The -carbon is chiral, like practically all other amino acids, thus lysine can refer to either enantiomer or a racemic mixture of both. The biologically active enantiomer L-lysine, with the -carbon in the S configuration, will be referred to as lysine in this article.

Part(b) Step 1:Given information

We have to find out the  what is the amino acid for AUU codons. 

Part(b) Step 2:Explanation

Other organisms, such as bacteria, use leucine biosynthesis enzymes to make isoleucine from pyruvate. The codons AUU, AUC, and AUA are used to encode it. Maple syrup urine illness is linked to an inability to break down isoleucine and other amino acids.

Part(c) Step 1:Given information

We have to find out  what is the amino acid for CGA codons. 

Part(c) Step 2:Explanation

Arginine residues are found in many proteins. The codons CGU, CGC, CGA, CGG, AGA, and AGG are used to encode it. The guanidine group in arginine is a precursor for nitric oxide production.

The codons CGU, CGC, CGA, CGG, AGA, and AGG are used to encode it. Depending on the developmental stage and health situation of the individual, arginine is classed as a semi essential or conditionally essential amino acid. Because preterm newborns are unable to synthesize or generate arginine on their own, it is a nutritional necessity for them.