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Encapsidation of adenovirus DNA involves specific interactions between cis-acting genomic DNA sequences and trans-acting proteins. The cis-acting packaging domain located near the left inverted terminal repeat is composed of a series of redundant but not functionally equivalent motifs. Such motifs are made up of the consensus sequence 5'-TTTGN 8 CG-3' and 5'-TTTG/A-3' in human adenovirus 5...
Two well-established determinants of retroviral tropism are envelope sequences that regulate entry and LTR sequences that can regulate viral expression in a cell-specific manner. Studies with human immunodeficiency virus-1 (HIV-1) have demonstrated that tropism of this virus maps primarily to variable envelope sequences. Studies have demonstrated that T cell and macrophage-specific transcription factor...
Human immunodeficiency virus type 1 (HIV-1) Rev-mediated nuclear export of viral RNAs involves the interaction of its leucine-rich nuclear export sequence (NES) with nuclear cofactors. In yeast two-hybrid screens of a human lymph node derived cDNA expression library, we identified the human nucleoporin Nup98 as a highly specific and potent interactor of the Rev NES. Using an extensive panel of nuclear...
E rns is a pestivirus envelope glycoprotein indispensable for virus attachment and infection of target cells. Unlike the other two envelope proteins E1 and E2, E rns lacks a transmembrane domain and a vast quantity is secreted into the medium of infected cells. The protein is also present in fractions of pure pestivirus virions, raising the important and intriguing...
We have examined patterns of sequence variability for evidence of linked sequence changes in HIV-1 subtype B protease using translated sequences from protease inhibitor (PI) treated and untreated subjects downloaded from the Stanford HIV RT and Protease Sequence Database (http://hivdb.stanford.edu). The final data set size was 648 sequences from untreated subjects (notx) and 531 for PI-treated subjects...
The family Polydnaviridae consists of ds-DNA viruses that are symbiotically associated with certain parasitoid wasps. PDVs are transmitted vertically but also are injected by wasps into hosts where they cause several physiological alterations including immunosuppression. The PDV genes responsible for mediating immunosuppression and other host alterations remain poorly characterized in large measure...
Expression of the murine leukaemia virus (MLV) major Gag antigen p65 Gag using the baculovirus expression system leads to efficient assembly and release of virus-like particles (VLP) representative of immature MLV. Expression of p180 Gag-Pol , facilitated normally in mammalian cells by readthrough of the p65 Gag termination...
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