Synthesis, No Synthesis, or Synthesis and Degradation of Ribosomal Ribonucleic Acid in Various Escherichia coli Strains Starved for an Amino Acid
AUTOR(ES)
Craig, E.
RESUMO
A standard stringent strain of Escherichia coli makes little or no ribosomal ribonucleic acid (RNA) during starvation for an essential amino acid, whereas the isogenic relaxed strain makes both ribosomal and messenger RNA. A third class of strains was found which continues to make ribosomal RNA during starvation, but the RNA made is apparently unstable. There is little accumulation of RNA in the third class of strains, and few complete newly formed chains of 3H-ribosomal RNA are observed in sedimentation analyses, even after long labeling times.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=251240Documentos Relacionados
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