PRA1 co-localizes with envelope but does not influence primate lentivirus production, infectivity or envelope incorporation

Philippe Blancou, David T. Evans, Ronald C. Desrosiers

Research output: Contribution to journalArticle

7 Scopus citations


The results of yeast and mammalian two-hybrid assays previously indicated complex formation between prenylated Rab acceptor 1 (PRA1) and the cytoplasmic domain of gp41 (gp41 CD) for both the human and simian immunodeficiency viruses [Evans, D. T., Tilman, K. C. & Desrosiers, R. C. (2002). J Virol 76, 327-337]. The assembly and release of infectious virus particles was studied under conditions of PRA1 overexpression in a transient transfection assay or suppression b RNA interference. Although a clear pattern of co-localization of PRA1 and gp41 was observed, no changes in virion release, infectivity or envelope content were observed as a result of either PRA1 suppression or overexpression. These data show that PRA1 co-localizes with gp41 inside cells and they are consistent with a direct or indirect interaction between these proteins. However, variation in the levels of PRA1 expression did not influence virion production, infectivity or envelope incorporation under the conditions of these assays.

Original languageEnglish (US)
Pages (from-to)1785-1790
Number of pages6
JournalJournal of General Virology
Issue number6
StatePublished - Jun 1 2005
Externally publishedYes


ASJC Scopus subject areas

  • Virology

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