Which of the following enzymes catalyzes the transpeptidation reaction linking amino acids in the growing polypeptide chain? A. Transpeptidase B. Peptidyl transferase C. Aminoacyl-tRNA synthetase D. Translocase
Question
Which of the following enzymes catalyzes the transpeptidation reaction linking amino acids in the growing polypeptide chain? A. Transpeptidase B. Peptidyl transferase C. Aminoacyl-tRNA synthetase D. Translocase
Solution
The enzyme that catalyzes the transpeptidation reaction linking amino acids in the growing polypeptide chain is Peptidyl transferase (Option B).
Here's a step-by-step explanation:
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The process of protein synthesis involves the translation of genetic information encoded in mRNA into a sequence of amino acids to form a polypeptide chain.
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This process occurs in the ribosome and involves several enzymes.
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Aminoacyl-tRNA synthetase (Option C) is responsible for attaching the correct amino acid to its corresponding tRNA molecule, a process known as "charging" the tRNA.
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Translocase (Option D) is involved in the process of moving the tRNA and mRNA down the ribosome during translation.
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Transpeptidase (Option A) is an enzyme involved in bacterial cell
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