RNA sequencing provides evidence for allelism of determinants of the N-, B- or NB-tropism of murine leukemia viruses

Jean Rommelaere, Helen Donis-Keller, Nancy Hopkins

    Research output: Contribution to journalArticle

    34 Scopus citations

    Abstract

    Previous genetic and biochemical studies identified three large RNAase T1-resistant oligonucleotides, each associated with either the N-, B- or NB-tropism of murine C-type viruses of BALB/c origin. These oligonucleotides were shown to lie in the 5′ third of the oligonucleotide maps of their respective viruses. We sequenced the three oligonucleotides and found that they share a 10 base sequence. Together these observations provide good evidence that the determinants of N-, B- or NB-tropism monitored by the three oligonucleotides are allelic. The oligonucleotides associated with N- and B-tropism differ in sequence at four of sixteen nucleotides, while the B- and NB-tropism-associated oligonucleotides differ in sequence by only one base out of sixteen. These results are consistent with the possibilities that B-tropic viruses may arise from N-tropic viruses by recombination, while NB-tropic viruses may arise from B-tropic virus by mutation. An unexplained finding was that a 10 base sequence present in the oligonucleotide associated with N-tropism is also found in the 3′ third of the genomes of the N-, B- and NB-tropic viruses studied.

    Original languageEnglish (US)
    Pages (from-to)43-50
    Number of pages8
    JournalCell
    Volume16
    Issue number1
    DOIs
    StatePublished - Jan 1979

    ASJC Scopus subject areas

    • Biochemistry, Genetics and Molecular Biology(all)

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