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硫链丝菌素,一种50S核糖体亚基功能抑制剂。

Thiostrepton, an inhibitor of 5OS ribosome subunit function.

作者信息

Weisblum B, Demohn V

出版信息

J Bacteriol. 1970 Mar;101(3):1073-5. doi: 10.1128/jb.101.3.1073-1075.1970.

Abstract

Thiostrepton inhibits (14)C-leucine incorporation by intact cells of Bacillus megaterium as well as (14)C-phenylalanine incorporation by a poly U-directed extract of Escherichia coli. Extracts of E. coli which are pretreated by incubation with thiostrepton cannot be reactivated by dialysis to more than 5% of their former activity. The 50S ribosome subunit appears to be the site of thiostrepton action, since protein-synthesizing activity can be restored to dialyzed pretreated extracts by supplementation with 50S ribosome subunits but not with 30S ribosome subunits. This technique also provides a simple sensitive method for detection of the biological activity of very small amounts of 50S ribosome subunits.

摘要

硫链丝菌素抑制巨大芽孢杆菌完整细胞对(14)C - 亮氨酸的掺入以及大肠杆菌多聚U指导提取物对(14)C - 苯丙氨酸的掺入。用硫链丝菌素孵育预处理过的大肠杆菌提取物,通过透析不能重新激活至其先前活性的5%以上。50S核糖体亚基似乎是硫链丝菌素的作用位点,因为通过补充50S核糖体亚基而非30S核糖体亚基,可以使透析后的预处理提取物恢复蛋白质合成活性。该技术还提供了一种简单灵敏的方法来检测极少量50S核糖体亚基的生物活性。

相似文献

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Thiostrepton: a ribosomal inhibitor of translocation.硫链丝菌素:一种核糖体转位抑制剂。
Biochem Biophys Res Commun. 1970 Aug 11;40(3):667-74. doi: 10.1016/0006-291x(70)90956-3.
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Effect of siomycin on the acceptor site of Escherichia coli ribosomes.硫霉素对大肠杆菌核糖体受体位点的作用。
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引用本文的文献

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Asymmetry in the 50S ribosomal subunit of Escherichia coli.大肠杆菌50S核糖体亚基中的不对称性。
Proc Natl Acad Sci U S A. 1974 Jan;71(1):172-6. doi: 10.1073/pnas.71.1.172.

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