How many amino acids are present in the polyp | vedclass

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(A) To determine the number of amino acids,we must identify the Open Reading Frame $(ORF)$ starting from the initiation codon $(AUG)$ and ending at th

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(A) To determine the number of amino acids,we must identify the Open Reading Frame $(ORF)$ starting from the initiation codon $(AUG)$ and ending at the termination codon ($UAA, UAG,$ or $UGA$). The given $m-RNA$ sequence is: $5'-UUUUCUAUGCUGGUGGCUUGAUUUUCCCCU-3'$. $1$. Locate the start codon $(AUG)$: The sequence contains $AUG$ starting at the $7^{th}$ position. $2$. Identify the codons following $AUG$: $AUG$ (Met) - $CUG$ (Leu) - $GUG$ (Val) - $GCU$ (Ala) - $UGA$ (Stop). $3$. The translation stops at the $UGA$ codon. $4$. The codons are: $AUG, CUG, GUG, GCU$. $5$. The $UGA$ codon is a stop codon and does not code for any amino acid. $6$. Therefore,the polypeptide consists of $4$ amino acids (Methionine,Leucine,Valine,and Alanine). Thus,the correct option is $A$.

How many amino acids are present in the polypeptide which is synthesised from the translation of the following $m-RNA$ sequence?
$5'-UUUUCUAUGCUGGUGGCUUGAUUUUCCCCU-3'$

Similar Questions

In a polypeptide chain consisting of $125$ amino acids,if the $25^{th}$ amino acid codon mutates to $UAA$,what will happen?

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How many amino acids are present in the polypeptide which is synthesised from the translation of the following $m-RNA$ sequence? $5'-UUUUCUAUGCUGGUGGCUUGAUUUUCCCCU-3'$