RNase T1-resistant oligonucleotides of B-tropic murine leukemia virus from BALB/c and five of its NB-tropic derivatives
- PMID: 196102
- PMCID: PMC515814
- DOI: 10.1128/JVI.23.1.188-195.1977
RNase T1-resistant oligonucleotides of B-tropic murine leukemia virus from BALB/c and five of its NB-tropic derivatives
Abstract
We used two-dimensional gel electrophoresis to obtain fingerprints of RNase T1-resistant oligonucleotides of a B-tropic murine leukemia virus from BALB/c and five NB-tropic viruses independently derived from this B virus by passage through NIH Swiss mouse embryo cells in vitro. The fingerprints of the B- and NB-tropic viruses were very similar: approximately 33 of 35 large T1-resistant oligonucleotides appeared to be shared by these viruses. However, the five NB-tropic viruses possessed an apparently common alteration relative to their B virus progenitor. This change involved the acquisition of one oligonucleotide and, tentatively, the loss of one oligonucleotide. We do not know whether these changes represent an alteration responsible for the change from B- to NB-tropism. Fingerprints of B- and NB-tropic viruses were not affected when the viruses were grown in cells of different Fv-1 type.
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