题目内容

Protein synthesis proceeds from 5'→ 3' of mRNA, and the synthesis of peptide chain starts from the N terminal.()

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During the elongation process of translation, the amino acid carried by aminoacyl-tRNA will be transferred to the end of extended polypeptide chain carried by peptidyl-tRNA with the help of the large subunit of ribosome.()

The elongation factor EF-G is responsible for the loading of aminoacyl-tRNA into A site.()

After the synthesis of polypeptide is completed, the release of synthetic peptides relys on the protein release factors,while the release of mRNA,ribosome subunits and tRNA requires ribosome recycling factors.()

The start codon is methionine in prokaryotes, so the initiator amino acid is always methionine or formylated methionine.()