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  Two initiation sites detected in the small s1 species of reovirus mRNA by dipeptide synthesis in vitro

Cenatiempo, Y., Twardowski, T., Shoeman, R. L., Ernst, H., Brot, N., Weissbach, H., et al. (1984). Two initiation sites detected in the small s1 species of reovirus mRNA by dipeptide synthesis in vitro. Proceedings of the National Academy of Sciences of the United States of America, 81(4), 1084-1088. Retrieved from http://www.pnas.org/content/81/4/1084.

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PNAS_81_1984_1084.pdf (beliebiger Volltext), 968KB
 
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 Urheber:
Cenatiempo, Yves, Autor
Twardowski, Tomasz, Autor
Shoeman, Robert L.1, 2, 3, Autor           
Ernst, Heinrich, Autor
Brot, Nathan, Autor
Weissbach, Herbert, Autor
Shatkin, Aaron J., Autor
Affiliations:
1Coherent diffractive imaging, Max Planck Institute for Medical Research, Max Planck Society, ou_1497692              
2Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              
3Analytical Protein Biochemistry, Max Planck Institute for Medical Research, Max Planck Society, ou_1497690              

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 Zusammenfassung: Reovirus mRNAs directed the synthesis of fMet dipeptides in a translation initiation system reconstituted from rabbit reticulocyte initiation and elongation factors, Artemia salina 80S ribosomes, yeast fMet-tRNAiMet and Escherichia coli3H-labeled aminoacyl tRNAs. As predicted from the GC(U,G) codon that follows the 5'-proximal AUG in half of the viral mRNA species, fMet-Ala was the predominant dipeptide product obtained in response to a mixture of mRNAs or to the separated size classes of medium (m) and small (s) mRNA. The four individual small mRNA species each directed the synthesis of an fMet dipeptide that was consistent with the utilization of the 5'-proximal AUG for initiation. In addition to fMet-Asp, the s1 mRNA also directed fMet-Glu synthesis indicative of initiation in a second reading frame at the 5'-penultimate AUG. The tripeptide fMet-Glu-Tyr was also synthesized from s1 mRNA, which further verified this second initiation site. mRNAs containing 5'-terminal GpppG were 10-15% as active as the corresponding m7G-capped templates. The dipeptide assay provides a rapid method for determining initiation sites in individual mRNAs or in mixtures of mRNAs.

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Sprache(n): eng - English
 Datum: 1983-11-101984-02-15
 Publikationsstatus: Erschienen
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Titel: Proceedings of the National Academy of Sciences of the United States of America
  Andere : Proceedings of the National Academy of Sciences of the USA
  Andere : Proc. Acad. Sci. USA
  Andere : Proc. Acad. Sci. U.S.A.
  Kurztitel : PNAS
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, D.C. : National Academy of Sciences
Seiten: - Band / Heft: 81 (4) Artikelnummer: - Start- / Endseite: 1084 - 1088 Identifikator: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230