P9620 Sigma

Puromycin dihydrochloride

Ready Made Solution, from Streptomyces alboniger, 10 mg/mL in H2O, 0.2 μm filtered



Puromycin is an aminonucleoside antibiotic that is derived from Streptomyces alboniger. It allows selection for cells that contain the resistance gene puromycin N-acetyl-transferase (PAC). It has been used to study vascular smooth muscle cell viability after treatment in the rabbit model 1. Puromycin is used to produce enhanced green fluorescent protein (EGFP) transgenic piglets after somatic cell cloning and embryo transfer2.

Biochem/physiol Actions

Puromycin inhibits bacterial and mammalian protein synthesis by causing premature chain termination during translation taking place in the ribosome. Puromycin is a reversible inhibitor of dipeptidyl-peptidase II (serine peptidase) and cytosol alanyl aminopeptidase.


Tested on HeLa cells for cell growth arrest and selection of cells after transfection of the pac resistance gene.

Protocols & Applications

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