The effects of streptomycin or dihydrostreptomycin binding to 16S RNA or to 30S ribosomal subunits. 1974

R T Garvin, and D K Biswas, and L Gorini

Evidence is presented suggesting that streptomycin binds to 16S RNA or to 30S ribosomal subunits at the same topographical site located on the RNA chain. The equally bactericidal dihydrostreptomycin binds to the same site as streptomycin but with lower affinity. The effect of drug binding to 16S RNA (measured by reconstitution inhibition) is readily reversible, while that of drug binding to 30S subunits (measured by misreading) persists after removal of the drug. Binding of the drug is not a necessary and sufficient reason for killing.

UI MeSH Term Description Entries
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D002250 Carbon Radioisotopes Unstable isotopes of carbon that decay or disintegrate emitting radiation. C atoms with atomic weights 10, 11, and 14-16 are radioactive carbon isotopes. Radioisotopes, Carbon
D002458 Cell Fractionation Techniques to partition various components of the cell into SUBCELLULAR FRACTIONS. Cell Fractionations,Fractionation, Cell,Fractionations, Cell
D004096 Dihydrostreptomycin Sulfate A semi-synthetic aminoglycoside antibiotic that is used in the treatment of TUBERCULOSIS. Dihydrostreptomycin,Citrocil,Sulfate, Dihydrostreptomycin
D004926 Escherichia coli A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D012270 Ribosomes Multicomponent ribonucleoprotein structures found in the CYTOPLASM of all cells, and in MITOCHONDRIA, and PLASTIDS. They function in PROTEIN BIOSYNTHESIS via GENETIC TRANSLATION. Ribosome
D012329 RNA, Bacterial Ribonucleic acid in bacteria having regulatory and catalytic roles as well as involvement in protein synthesis. Bacterial RNA
D012335 RNA, Ribosomal The most abundant form of RNA. Together with proteins, it forms the ribosomes, playing a structural role and also a role in ribosomal binding of mRNA and tRNAs. Individual chains are conventionally designated by their sedimentation coefficients. In eukaryotes, four large chains exist, synthesized in the nucleolus and constituting about 50% of the ribosome. (Dorland, 28th ed) Ribosomal RNA,15S RNA,RNA, 15S
D013307 Streptomycin An antibiotic produced by the soil actinomycete Streptomyces griseus. It acts by inhibiting the initiation and elongation processes during protein synthesis. Estreptomicina CEPA,Estreptomicina Clariana,Estreptomicina Normon,Strepto-Fatol,Strepto-Hefa,Streptomycin GrĂ¼nenthal,Streptomycin Sulfate,Streptomycin Sulfate (2:3) Salt,Streptomycin Sulphate,Streptomycine Panpharma,Strepto Fatol,Strepto Hefa

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