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Question

Which one inhibits protein synthesis by binding to 50S ribosome?

A
Tetracycline
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B
Streptomycin
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C
Erythromycin
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D
Penicillin
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Solution

The correct option is B Erythromycin
Antibiotics are antibacterial compound which are used in treatment of various bacterial infections. Tetracycline and Streptomycin antibiotics inhibit protein synthesis by the binding to the 30S subunit of the bacterial ribosome. Erythromycin antibiotics inhibit protein synthesis by binding to the 50S subunit of the bacterial ribosome. Penicillin antibiotics inhibit bacteria by preventing peptidoglycan from cross-linking properly in the last stages of bacterial cell wall synthesis.
Thus, the correct answer is 'Erythromycin.'

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