Which one of the following enzymes is not a protein, but an RNA molecule
Peptidyl transferase
RNA polymerse
Restriction endonuclease
Reverse transcriptase
Some RNA molecules have intrinsic catalytic activity. The activity of these RNA enzymes, or ribozymes, often involves the cleavage of a nucleic acid. Two ribozymes are the peptidyl transferase that catalyzes peptide bond formation on the ribosome, and ribozymes involved in the RNA splicingRef: Harper 30th pg: 363
Metabolism of protein and amino acid