Determination of the relative amounts of Gag and Pol proteins in foamy virus particles

<p>Abstract</p> <p>We determined the relative ratios of Gag and Pol molecules in highly purified virions of spumaretroviruses or foamy viruses (FVs) using monoclonal antibodies and bacterially expressed reference proteins. We found that the cleaved p68<sup>Gag </sup>moi...

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Main Authors: Herchenröder Ottmar, Rudolph Wolfram, Cartellieri Marc, Lindemann Dirk, Rethwilm Axel
Format: Article
Language:English
Published: BMC 2005-07-01
Series:Retrovirology
Online Access:http://www.retrovirology.com/content/2/1/44
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author Herchenröder Ottmar
Rudolph Wolfram
Cartellieri Marc
Lindemann Dirk
Rethwilm Axel
author_facet Herchenröder Ottmar
Rudolph Wolfram
Cartellieri Marc
Lindemann Dirk
Rethwilm Axel
author_sort Herchenröder Ottmar
collection DOAJ
description <p>Abstract</p> <p>We determined the relative ratios of Gag and Pol molecules in highly purified virions of spumaretroviruses or foamy viruses (FVs) using monoclonal antibodies and bacterially expressed reference proteins. We found that the cleaved p68<sup>Gag </sup>moiety dominates in infectious FVs. Furthermore, approximate mean ratios in FV are 16:1 (pr71<sup>Gag </sup>plus p68<sup>Gag</sup>:p85<sup>RT</sup>),12:1 (p68<sup>Gag</sup>:p85<sup>RT</sup>), and 10:1 (pr71<sup>Gag </sup>plus p68<sup>Gag</sup>:p40<sup>IN</sup>). Thus, the results indicate that FVs have found a way to incorporate approximately as much Pol protein into their capsids as orthoretroviruses, despite a completely different Pol expression strategy.</p>
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spelling doaj.art-9bcd536df146424ab74a26fa8084c8c02022-12-22T01:39:23ZengBMCRetrovirology1742-46902005-07-01214410.1186/1742-4690-2-44Determination of the relative amounts of Gag and Pol proteins in foamy virus particlesHerchenröder OttmarRudolph WolframCartellieri MarcLindemann DirkRethwilm Axel<p>Abstract</p> <p>We determined the relative ratios of Gag and Pol molecules in highly purified virions of spumaretroviruses or foamy viruses (FVs) using monoclonal antibodies and bacterially expressed reference proteins. We found that the cleaved p68<sup>Gag </sup>moiety dominates in infectious FVs. Furthermore, approximate mean ratios in FV are 16:1 (pr71<sup>Gag </sup>plus p68<sup>Gag</sup>:p85<sup>RT</sup>),12:1 (p68<sup>Gag</sup>:p85<sup>RT</sup>), and 10:1 (pr71<sup>Gag </sup>plus p68<sup>Gag</sup>:p40<sup>IN</sup>). Thus, the results indicate that FVs have found a way to incorporate approximately as much Pol protein into their capsids as orthoretroviruses, despite a completely different Pol expression strategy.</p>http://www.retrovirology.com/content/2/1/44
spellingShingle Herchenröder Ottmar
Rudolph Wolfram
Cartellieri Marc
Lindemann Dirk
Rethwilm Axel
Determination of the relative amounts of Gag and Pol proteins in foamy virus particles
Retrovirology
title Determination of the relative amounts of Gag and Pol proteins in foamy virus particles
title_full Determination of the relative amounts of Gag and Pol proteins in foamy virus particles
title_fullStr Determination of the relative amounts of Gag and Pol proteins in foamy virus particles
title_full_unstemmed Determination of the relative amounts of Gag and Pol proteins in foamy virus particles
title_short Determination of the relative amounts of Gag and Pol proteins in foamy virus particles
title_sort determination of the relative amounts of gag and pol proteins in foamy virus particles
url http://www.retrovirology.com/content/2/1/44
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