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. 1980 Dec;36(3):659–664. doi: 10.1128/jvi.36.3.659-664.1980

Comparison of the Nucleotide Sequence at the 5′ End of RNAs from Nine Aphthoviruses, Including Representatives of the Seven Serotypes

Timothy J R Harris 1
PMCID: PMC353693  PMID: 6257918

Abstract

The sequence of about 70 nucleotides at the 5′ end of the RNAs of nine different aphthoviruses (foot-and-mouth disease viruses), including representatives of the seven serotypes of the virus, has been determined by partial enzyme digestion of 32P-end-labeled S fragment—that part of the RNA lying to the 5′ side of the poly(C) tract and including the 5′ end of the molecule. The S fragments were prepared from polyadenylated virus-specific RNA extracted from infected cells by digestion with RNase H in the presence of oligo(dG)12-18. The first 27 nucleotides from the 5′ end were highly conserved in all the RNAs. This region was followed by a more variable region of about 15 nucleotides, showing some length and sequence heterogeneity and including potential but probably nonutilized initiation codons. In agreement with previous homology studies, the sequencing results showed that the European serotypes A, O, and C form a group distinct from the SAT serotypes and that the Asia 1 serotype is closely related to the European group. The lengths of the S fragments of two different RNAs were confirmed as containing 360 to 400 nucleotides by gel electrophoresis with reference to nucleotide markers of known size.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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