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15 April, 19:39

Notice the codon AUG codes for methionine. AUG is a common "start" codon, which indicates the

beginning of a gene. Now look at the codon UGA. This is one of three "stop" codons that indicates the

end of a gene. Once a stop codon is reached, a protein is terminated. What are the other two stop

codons?

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  1. 15 April, 20:01
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    UAG and UAA are the other two stop codons.

    Explanation:

    In a mRNA sequence there are codons which represents the termination of polypeptide chain getting formed. Such triplet sequence which instead of coding for amino acids stops the chain is termed as stop codons.

    The start and stop codons decide the length of the polypeptide chain or primary protein transcript or simply the whole protein molecule.

    In the genetic code table there are 3 stop codons these are:

    UAG

    UAA

    UGA

    Mutation in any of these stop codons would cause the loss of protein function.

    Once the stop codon sequence comes the protein synthesis stops.
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