منابع مشابه
Uniqueness of Bacterial Ribosomes * by Marion
24Boyse, E. A., L. J. Old, G. Geering, and E. Stockert, unpublished observations. 25 Cells from 4 cases of human leukemia (acute leukemia in a child, acute myeloid leukemia, chronic myeloid leukemia, and chronic lymphatic leukemia) were obtained through the courtesy of Dr. B. Clarkson, Dr. L. Murphy, and Dr. C. Tan of Sloan-Kettering Institute. These cells did not acquire sensitivity to Rausche...
متن کاملMessenger selection by bacterial ribosomes.
The counterpart of Escherichia coli initiation factor 3(IF-3) was isolated from Caulobacter crescentus, purified to homogeneity, and used in comparative studies on in vitro translation of RNA from the C. crescentus RNA phage Cb5 and of coliphage MS2 RNA. The two phage RNAs are similar in physical properties and analogous in genetic content. The factor, C-IF-3, substitutes for E. coli IF-3 and p...
متن کاملShiga toxin attacks bacterial ribosomes as effectively as eucaryotic ribosomes.
Several pathogenic bacteria, including Shigelladysenteriae and certain strains of Escherichia coli, produce potent class 2 ribosome inhibiting proteins (RIPs) termed Shiga toxins (Stx). The toxins are bipartite molecules composed of a single A chain (StxA) noncovalently associated with a pentamer of receptor-binding B subunits (StxB). StxA and Stx1A from E. coli are protoxins. Proteolysis gener...
متن کاملIsolation of Bacterial Ribosomes with Monolith Chromatography
We report the development of a rapid chromatographic method for the isolation of bacterial ribosomes from crude cell lysates in less than ten minutes. Our separation is based on the use of strong anion exchange monolithic columns. Using a simple stepwise elution program we were able to purify ribosomes whose composition is comparable to those isolated by sucrose gradient ultracentrifugation, as...
متن کاملRole of bacterial ribosomes in barotolerance.
The effects of high hydrostatic pressures on protein synthesis by whole cells and cell free preparations of Escherichia coli, Pseudomonas fluorescens, and Pseudomonas bathycetes were determined. Actively growing cells of P. bathycetes and P. fluorescens were less sensitive than were E. coli cells. Protein synthesis by cell free preparations of E. coli and P. fluorescens showed the same extent o...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1964
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.52.4.958