Question

Ribosome inhibitor antibiotics inhibit bacterial protein synthesis by binding to and interfering with ribosomes. All of these antibiotics are ribosome inhibitor antibiotics except:

O Tetracyclines
O Doxycycline
O Erythromycin
O Vancomycin
O Clindamycin

Answer 1

Among the listed antibiotics, Vancomycin is the one that does not inhibit bacterial protein synthesis by binding to and interfering with ribosomes. Instead, it targets the synthesis of the bacterial cell wall. Therefore, the correct option is D.

Step-by-step explanation:

The antibiotics listed in the question all function as inhibitors of bacterial protein synthesis, except for one. Tetracyclines, Doxycycline, and Erythromycin are known to bind to the ribosomal subunits, thereby interfering with various stages of bacterial protein synthesis. Tetracyclines, for instance, bind to the 30S ribosomal subunit and block the binding of tRNA, which is crucial for protein synthesis. Erythromycin binds to the 50S ribosomal subunit of bacteria. However, Vancomycin does not function as a ribosome inhibitor antibiotic; instead, it inhibits cell wall synthesis by binding to the ends of peptidoglycan precursors. Therefore, it is the antibiotic in the list that is not a ribosome inhibitor antibiotic.