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. 2015 Feb 10;6(7):4585–4601. doi: 10.18632/oncotarget.3278

Figure 3. Puromycin: Structure and key features.

Figure 3

Puromycin resembles the 3′ end of an aminoacylated tRNA, which interacts with the A-site of the ribosome. During protein synthesis, puromycin transfers to the growing polypeptide chain, leading to the generation of a puromycylated-peptide, which is prematurely released. As such, puromycin inhibits protein synthesis via a premature chain termination mechanism.