Q. 17.51 - An Introduction to General, Organic, and Biological Chemistry

Question

Use three-letter and one-letter abbreviations to write the amino acid sequence for the peptide from each of the following mRNA sequences:

a. $\mathrm{ACC} \mathrm{ACA} \mathrm{ACU}$

b. $UUU CCG UUC CCA$

c. $UAC GGG AGA UGU$

Step-by-Step Solution

Answer

(part a) . $- ACC ACA ACU -$ codes for $- Thr - Thr-Thr -$

(part b) . $- UUU CCG UUC CCA-$ codes for $-Phe-Pro-Phe-Pro -$

(part c) . $- UUA GGG AGA UGC -$ codes for $-Leu-Gly-Arg-Cys-$

Step 1: Introduction part(a)

The genetic structure consists of DNA (deoxyribonucleic acid) as well as RNA "codons" that are transmitted through heredity (ribonucleic acid). Throughout "translation," those codons keep track of the polypeptide chain sequencing

The four components (C) of adenine (A), thymine (T), guanine (G), and cytosine (C) resulting in 64 different combinations (such as AUG, UAG, UGA, and so on) that encode twenty different peptides. In RNA, uracil (U) is used instead of thymine.

Both polynucleotide strands of a DNA molecule extend throughout protein creation, and the information (triplets of bases) is duplicated onto a molecule is called mRNA (messenger RNA). "Transcript" is the process of joining the mRNA nucleotides together and in complementary pairing.

Step 2: Given information part(a)

The list of mRNA codons can be used to translate those mRNA codons to amino acids. A few of the mRNA codons, and also the amino acids it code for, were just as follows:

Step 3: Explanation part(a)

$- ACC ACA ACU -$ codes for $- Thr - Thr-Thr -$

Step 4: Given information part(b)

We may translate the mRNA codons into amino acids suggested through the mRNA codons chart. A few of the mRNA codons, and also the amino acids it code with, were just as follows:

Step 5: Explanation part(b)

$- UUU CCG UUC CCA-$ codes for $-Phe-Pro-Phe-Pro -$

Step 6: Given information part(c)

We may translate the mRNA codons into amino acids suggested through the mRNA codons chart. A few of the mRNA codons, and the amino acids that encode for, are as follows:

Step 7: Explanation part(c)

$- UUA GGG AGA UGC -$ codes for $-Leu-Gly-Arg-Cys-$