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Question
Initiating codon of prokaryotes is mainly
Initiating codon of prokaryotes is mainly
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Solution
The correct option is C AUG
The start codon specifies the first codon of mRNA transcript that is translated by a ribosome. It codes for methionine in eukaryotes and a modified Met in prokaryotes. "AUG" is the most common start codon; option A is correct. The codons, different from the standard AUG codon, but are translated as Met when present at the start of a protein are called as alternative start codons. These codons code a different amino acid otherwise. GUG, UUG, AUU and CUG are the prokaryotic alternative start codons; option B is incorrect as GUG is not primary start codon. UGA and UAA are stop codons that cause termination of translation.
The start codon specifies the first codon of mRNA transcript that is translated by a ribosome. It codes for methionine in eukaryotes and a modified Met in prokaryotes. "AUG" is the most common start codon; option A is correct. The codons, different from the standard AUG codon, but are translated as Met when present at the start of a protein are called as alternative start codons. These codons code a different amino acid otherwise. GUG, UUG, AUU and CUG are the prokaryotic alternative start codons; option B is incorrect as GUG is not primary start codon. UGA and UAA are stop codons that cause termination of translation.
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