Which of the following is a protein synthesis inhibitor that catalytically inactivates 28S rRNA and is very toxic in eukaryotic cells?

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Ricin is a protein synthesis inhibitor that catalytically inactivates 28S rRNA. It is extremely toxic in eukaryotic cells and can lead to cell death. Puromycin is also a protein synthesis inhibitor, but it acts by prematurely terminating translation. Cycloheximide is another protein synthesis inhibitor that blocks the translocation step of protein synthesis. Tetracycline inhibits bacterial protein synthesis by blocking the tRNA binding site on the 30S ribosome subunit, but it has no effect on eukaryotic protein synthesis.

Which of the Following Is a Protein Synthesis Inhibitor That