Heteroduplex analysis of the sequence relations between the RNAs of mink cell focus-inducing and murine leukemia viruses.
AUTOR(ES)
Chien, Y H
RESUMO
The sequence relationships betwen AKR ecotropic virus and an AKR-derived "mink cell focus-inducing" (MCF) isolate (AKR MCF 247), between Moloney murine leukemia virus (M-MLV) and an M-MLV MCF isolate (M-MLV83), and between AKR and M-MLV were studied by electron microscopic heteroduplex analysis. The MCF-specific sequences were found to map from 1.95 kilobases (kb) to 2.75 kb (+/- 0.15 kb) from the 3' end of the RNAs for both MCF isolates. The major sequence nonhomology regions between AKR and M-MLV lie between 0.9 and 3.5 kb from the 3' end. However, the AKR and M-MLV sequences immediately adjacent to the 1.95- and 2.75-kb junctions with MCF-specific sequences are relatively similar in AKR and M-MLV. Our results suggest that the env gene of MLVs maps from 1 kb to 3 kb from the 3' end of the genomic RNA and that the carboxyl end of the glycoprotein of each MCF strain is similar (or identical) to that of its ecotropic parent.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=354274Documentos Relacionados
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