Answer to Question #93789 in Molecular Biology for Kylie

Question #93789

4.1 Discuss how the ribosome knows where to begin during protein synthesis.


1
Expert's answer
2019-09-09T13:03:20-0400

The ribosome begins protein synthesis from the start codon (AUG) encoding methionine. In prokaryotes, ribosome binds to specific sequence (ribosome binding site, or Shine-Dalgarno sequence) located upstream of the start codon of an mRNA. In eukaryotes, ribosome scans mRNA and identifies start codon within the Kozak consensus sequence.


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