This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Translation, Subject name: Biochemistry
[{'content': 'Which one of the following is a tyrosine tRNA analogue that causes premature chain termination? \nSelect and explain. \nA. Cycloheximide, B. Puromycin, C. Paromomycin, D. Erythromycin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Puromycin Structural analogue of tyrosinyl tRNA. Incorporated into nascent protein chains by a nonhydrolyzable peptide bond. Growing of the peptide bond is inhibited. Inhibits protein synthesis in both prokaryotes and eukaryotes Causes premature chain termination', 'role': 'assistant'}]