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Molecular Basis Of Inheritance

Question
CBSEENBI12047444

The enzyme peptidyl transferase of prokaryotes resides in

  • 50 S ribosome

  • 30 S ribosome

  • 40 S ribosome

  • 60 S ribosome

Solution

A.

50 S ribosome

The peptidyl transferase is an aminoacyl transferase as well as the primary enzymatic function of the ribosome, which forms peptide bonds between adjacent amino acids using tRNAs during the translation process of protein biosynthesis. 

In prokaryotes, the 50 S (23 S component) ribosome subunit contains the peptidyl transferase component and acts as a ribozyme. In eukaryotes, the 60S (28S component) ribosome subunit contains the peptidyl transferase component and acts as the ribozyme.