P9620 SIGMA 嘌呤霉素

一般描述Puromycin, also known as clomycin or stylomycin hydrochloride, is an aminonuclease antibiotic and protein synthesis inhibitor. It is produced by the soil actinomycete bacterium Streptomyces alboniger through a series of enzymatic reactions. Puromycin is effective against both prokaryotic and eukaryotic cells, working by interfering with RNA function, leading to the inhibition of protein synthesis. It also serves as an inhibitor of aminopeptidase and enkephalinase. The growth of bacteria, protozoa, algae, and mammalian cells is quickly halted by puromycin, but cells with the pac gene exhibit resistance. The gene product of the pac gene is puromycin-N-acetyl-transferase, which inactivates puromycin through acetylation.

Puromycin′s structural similarity to the amino acid-bearing end of tRNA allows it to enter the ribosome during protein synthesis, bind to the nascent polypeptide chain, and halt chain elongation. Widely used in cell culture, puromycin serves as a selective agent for cells that have been transformed with a gene conferring resistance to puromycin.

应用

嘌呤霉素是一种氨基核苷酸抗生素，衍生自白黑链霉菌。 它可以选择包含抗性基因嘌呤霉素 N-乙酰基转移酶（PAC）的细胞。 它被用在兔模型中，研究处理后的血管平滑肌细胞的生存能力[1]。 嘌呤霉素用在体细胞克隆和胚胎移植后产生增强的绿色荧光蛋白（EGFP）转基因仔猪[2]。