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嘌呤霉素使哺乳动物多核糖体解离为亚基。

Dissociation of mammalian polyribosomes into subunits by puromycin.

作者信息

Blobel G, Sabatini D

出版信息

Proc Natl Acad Sci U S A. 1971 Feb;68(2):390-4. doi: 10.1073/pnas.68.2.390.

Abstract

Hepatic ribosomes have been dissociated into biologically active subunits as follows. Polysomes were treated at 0 degrees C with puromycin at high ionic strength. This released most of the nascent polypeptide chains without dissociating the polysomes, which retained the mRNA and the tRNA moiety of peptidyl tRNA, but were unable to continue the translation of mRNA. The polysomes were then heated to 37 degrees C, when they dissociated completely into subunits. Similar treatment without puromycin resulted in only partial dissociation.

摘要

肝核糖体已按如下方式解离成具有生物活性的亚基。多核糖体在0℃下于高离子强度条件下用嘌呤霉素处理。这释放了大部分新生多肽链,而多核糖体并未解离,其保留了mRNA和肽基tRNA的tRNA部分,但无法继续翻译mRNA。然后将多核糖体加热至37℃,此时它们完全解离成亚基。在没有嘌呤霉素的情况下进行类似处理仅导致部分解离。

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