Merregaert J, van Emmelo J, Devos R, Porter A, Fellner P, Fiers W. The 3'-Terminal nucleotide sequence of encephalomyocarditis virus RNA.
EUROPEAN JOURNAL OF BIOCHEMISTRY 1978;
82:55-63. [PMID:
74334 DOI:
10.1111/j.1432-1033.1978.tb11996.x]
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Abstract
Poly(A)-containing encephalomyocarditis virus RNA functions as an excellent template for cDNA synthesis in vitro with an RNA-dependent DNA polymerase in the presence of an oligothymidylate primer. Under appropriate conditions, discrete transcripts of increasing chain length were obtained, suitable for sequence analysis. A limited cDNA fragment of 36 nucleotides, primer (dT)10 included, was synthesized when dGTP was omitted from the reaction mixture and its primary structure was elucidated using direct DNA-sequencing methods. The complement corresponds to the 3' end of encephalomyocarditis RNA. The hexanucleotide (5'-3')(A-A-U-A-A-A) found in this sequence is also present in all 3' non-coding regions of poly(A)-containing eukaryotic mRNAs studied until now, in nearly identical positions relative to the poly(A) tail. The possible biological significance of this structural homology is discussed.
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