Related to translation: Predict the amino acid sequence for the given template strand of DNA. ...

Related to translation: Predict the amino acid sequence for the given template strand of DNA.

3’- T A C G T T C A T A T C C G T A T G T A T A T T – 5’

Solutions

Expert Solution

During translation, ribosomes produce peptide chains with the amino acid sequence as per the triplet codons available on mRNA molecules. So, we will first predict the codons on the mRNA molecule with the help of the base sequence of the given template strand of DNA.

On the mRNA molecule, guanine (G) will take place of the cytosine (C) on the template strand of DNA, and cytosine (C) will take place of guanine (G) on the template strand of the DNA. On mRNA molecule, adenine (A) will take place of thymine (T).on the template strand of DNA, and uracil (U) will take place of adenine (A) on the template strand of DNA.

Please refer to the following table to predict the amino acid sequence for the given template strand of DNA.

DNA template strand	predicted mRNA codons	predicted amino acids
TAC	AUG	Methionine
GTT	CAA	Glutamine
CAT	GUA	Valine
ATC	UAG	Stop codon
CGT	GCA	Alanine
ATG	UAC	Tyrosine
TAT	AUA	Isoleucine
ATT	UAA	Stop codon

The table shows that the ribosome will stop synthesizing polypeptide after the third amino acid as the fourth codon is a stop codon. The predicted amino acid sequence for the given template strand of DNA is Methionine-Glutamine-Valine.

gladiator answered 1 year ago

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