Thiostrepton, an Inhibitor of 50 S Ribosome Subunit Function
Year: 1970
Type: article
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.
Source: Journal of Bacteriology
Authors: B. Weisblum, V. Demohn
Institution: University of Wisconsin–Madison
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W1551967363