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The ribosomal peptidyl transferase transfers ___________

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The ribosomal peptidyl transferase transfers ___________

(a) An isolated amino acid to the peptide chain

(b) A peptide chain to an amino acid

(c) A peptide chain to another peptide chain

(d) An amino acid to a tRNA

The question was asked during an interview.

This interesting question is from Ribosome topic in chapter Gene Expression : Translation of Cytogenetics

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Right option is (b) A peptide chain to an amino acid

Easiest explanation: Ribosomal peptidyl transferase transfers a peptide chain over the tRNA in P site of the ribosome to the tRNA’s amino acid in the A site of the same ribosome.

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