Biological and molecular analysis of LCV, an endogenous retrovirus with defective env gene.

Abstract:

:Retrovirus infectivity is the result of a cooperative interaction of three structural genes, gag, pol, and env. Since the L-cell endogenous retrovirus (LCV) lacks the env gene translation product, our aim was to study the biological and molecular basis of its non-infectiousness. Fusion experiments between LCV and homologous or heterologous cells demonstrated that virus production could be obtained only after LCV artificial penetration in murine cells and that the new progeny was still noninfectious. Northern blot analysis and heteroduplex mapping of the genomic RNA revealed a 0.99 kb deletion including the 3' region of the pol reading frame, the whole xenotropic and part of the ecotropic domain of the env gene. The results suggest that the observed deletion is responsible for the absence of the gp 70 and the gp 15 E molecules in the virion and seems therefore to be the molecular basis for the non-infectiousness of this retrovirus.

journal_name

Arch Virol

journal_title

Archives of virology

authors

De Giuli Morghen C,Custode P,Lavanga E,Negri A,Radaelli F,Radaelli A

doi

10.1007/BF01315566

subject

Has Abstract

pub_date

1988-01-01 00:00:00

pages

99-110

issue

1-2

eissn

0304-8608

issn

1432-8798

journal_volume

102

pub_type

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