Lysine tRNAs from Bacillus subtilis 168: function of the isoacceptors in a rabbit reticulocyte cell-free protein-synthesizing system.
AUTOR(ES)
Smith, D W
RESUMO
The two principal tRNA Lys isoaccepting species of Bacillus subtilis were compared in their functional activity in translating rabbit globin. Although neither species demonstrates any preference in reading either of the lysine codons, there is an overall preference for tRNa Lys 3 in lysine incorporation. The ratios of lysine incorporated by the two species into the different lysine-containing sites in the globin subunits vary over a more than two-fold range. As described in the accompanying paper, tRNA Lys 1 is a hypomodified form of tRNA Lys 3. Consistent with studies on other rRNA species, the fully modified isoacceptor functions preferentially. In contrast to these results, however, the fully modified isoacceptor (tRNA Lys 3) is found predominantly in rapidly dividing cells while the hypomodified isoacceptor (tRNA Lys 1) predominates in the stationary cells and spores of B.l subtilis.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=320694Documentos Relacionados
- Natural Messenger Ribonucleic Acid-Directed Cell-Free Protein-Synthesizing System of Bacillus subtilis
- Lysine tRNAs from Bacillus subtilis 168: structural analysis.
- Heterotrophic Nature of the Cell-Free Protein-Synthesizing System from the Strict Chemolithotroph, Thiobacillus thiooxidans
- Preparation and Characterization of a Highly Active Cell-free Protein-synthesizing System from Dry Pea Primary Axes 1
- Use of natural mRNAs in the cell-free protein-synthesizing systems of the moderate halophile Vibrio costicola.