NCIt definition : The hydrochloride salt form of puromycin, an aminoglycoside antibiotic isolated from
the bacterium Streptomyces alboniger. Acting as an analog of the 3' terminal end of
aminoacyl-tRNA, puromycin incorporates itself into a growing polypeptide chain and
causes its premature termination, thereby inhibiting protein synthesis. This agent
has antimicrobial, antitrypanosomal, and antineoplastic properties; it is used as
an antibiotic in cell culture.;