JBC, Vol. 252, Issue 21, 7818-7825, Nov, 1977
Biochemical and immunological properties of gag genecoded structural proteins of endogenous tyep C RNA tumor viruses of diverse mammalian species
J. R. Stephenson, R. K. Reynolds, S. G. Devare and F. H. Reynolds
The major nonglycosylated structure proteins of mammalian type C RNA tumor
viruses are synthesized in the form of a high molecular weight precursor
coded for by a viral gene disignated "gag". Previous genetic analysis of a
prototype virus isolated of mouse origin has led to a determination of the
internal arragnement of the regions within the gag gene coding for
individual structural proteins. In the present study, the biochemical
properties of structural proteins of type C virus isolates of additional
mammalian species were analyzed. The results obtained indicate that the
biochemical properties of immunologically cross-reactive proteins have been
highly conserved throughout the evolution of this group of viruses.
Moreover, these findings provide a means of mapping the gag genes of a
broad range of mammalian type C viruses. In view of the results obtained, a
new nomenclature system for type C viral gag gene-coded translational
products is proposed.