Biology, asked by rahulaisectda7717, 1 year ago

Why is the start codon necessary?

Answers

Answered by Anonymous
1
#aNsWeR ➡ A ribosome binding site, or ribosomal binding site (RBS), is a sequence of nucleotides upstream of the start codon of an mRNAtranscript that is responsible for the recruitment of a ribosome during the initiation of protein translation. Mostly, RBS refers to bacterial sequences, although internal ribosome entry sites (IRES) have been described in mRNAs of eukaryotic cells or viruses that infect eukaryotes. Ribosome recruitment in eukaryotes is generally mediated by the 5' cap present on eukaryotic mRNAs.

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Answered by Sweetbuddy
3
Hey buddy here is ur answer ...!!

》 When it does other proteins called release factors come into play and they dislodge the ribosome from the mRNA.

》If the ribosome encounters another AUG codon after the start then it would consider it as acodon for methionine.

》 However there are situations when the second AUG can act as an alternative start site.

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