Biophysical characterization and membrane interaction of the two fusion loops of glycoprotein B from herpes simplex type I virus.
The molecular mechanism of entry of herpesviruses requires a multicomponent fusion system. Cell invasion by Herpes simplex virus (HSV) requires four virally encoded glycoproteins: namely gD, gB and gH/gL. The role of gB has remained elusive until recently when the crystal structure of HSV-1 gB becam...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22384173/pdf/?tool=EBI |
| _version_ | 1818995426784706560 |
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| author | Annarita Falanga Rossella Tarallo Giuseppe Vitiello Mariateresa Vitiello Emiliana Perillo Marco Cantisani Gerardino D'Errico Massimiliano Galdiero Stefania Galdiero |
| author_facet | Annarita Falanga Rossella Tarallo Giuseppe Vitiello Mariateresa Vitiello Emiliana Perillo Marco Cantisani Gerardino D'Errico Massimiliano Galdiero Stefania Galdiero |
| author_sort | Annarita Falanga |
| collection | DOAJ |
| description | The molecular mechanism of entry of herpesviruses requires a multicomponent fusion system. Cell invasion by Herpes simplex virus (HSV) requires four virally encoded glycoproteins: namely gD, gB and gH/gL. The role of gB has remained elusive until recently when the crystal structure of HSV-1 gB became available and the fusion potential of gB was clearly demonstrated. Although much information on gB structure/function relationship has been gathered in recent years, the elucidation of the nature of the fine interactions between gB fusion loops and the membrane bilayer may help to understand the precise molecular mechanism behind herpesvirus-host cell membrane fusion. Here, we report the first biophysical study on the two fusion peptides of gB, with a particular focus on the effects determined by both peptides on lipid bilayers of various compositions. The two fusion loops constitute a structural subdomain wherein key hydrophobic amino acids form a ridge that is supported on both sides by charged residues. When used together the two fusion loops have the ability to significantly destabilize the target membrane bilayer, notwithstanding their low bilayer penetration when used separately. These data support the model of gB fusion loops insertion into cholesterol enriched membranes. |
| first_indexed | 2024-12-20T21:13:40Z |
| format | Article |
| id | doaj.art-415c9aee102c4bedb37923a9df19e764 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-20T21:13:40Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-415c9aee102c4bedb37923a9df19e7642022-12-21T19:26:29ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0172e3218610.1371/journal.pone.0032186Biophysical characterization and membrane interaction of the two fusion loops of glycoprotein B from herpes simplex type I virus.Annarita FalangaRossella TaralloGiuseppe VitielloMariateresa VitielloEmiliana PerilloMarco CantisaniGerardino D'ErricoMassimiliano GaldieroStefania GaldieroThe molecular mechanism of entry of herpesviruses requires a multicomponent fusion system. Cell invasion by Herpes simplex virus (HSV) requires four virally encoded glycoproteins: namely gD, gB and gH/gL. The role of gB has remained elusive until recently when the crystal structure of HSV-1 gB became available and the fusion potential of gB was clearly demonstrated. Although much information on gB structure/function relationship has been gathered in recent years, the elucidation of the nature of the fine interactions between gB fusion loops and the membrane bilayer may help to understand the precise molecular mechanism behind herpesvirus-host cell membrane fusion. Here, we report the first biophysical study on the two fusion peptides of gB, with a particular focus on the effects determined by both peptides on lipid bilayers of various compositions. The two fusion loops constitute a structural subdomain wherein key hydrophobic amino acids form a ridge that is supported on both sides by charged residues. When used together the two fusion loops have the ability to significantly destabilize the target membrane bilayer, notwithstanding their low bilayer penetration when used separately. These data support the model of gB fusion loops insertion into cholesterol enriched membranes.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22384173/pdf/?tool=EBI |
| spellingShingle | Annarita Falanga Rossella Tarallo Giuseppe Vitiello Mariateresa Vitiello Emiliana Perillo Marco Cantisani Gerardino D'Errico Massimiliano Galdiero Stefania Galdiero Biophysical characterization and membrane interaction of the two fusion loops of glycoprotein B from herpes simplex type I virus. PLoS ONE |
| title | Biophysical characterization and membrane interaction of the two fusion loops of glycoprotein B from herpes simplex type I virus. |
| title_full | Biophysical characterization and membrane interaction of the two fusion loops of glycoprotein B from herpes simplex type I virus. |
| title_fullStr | Biophysical characterization and membrane interaction of the two fusion loops of glycoprotein B from herpes simplex type I virus. |
| title_full_unstemmed | Biophysical characterization and membrane interaction of the two fusion loops of glycoprotein B from herpes simplex type I virus. |
| title_short | Biophysical characterization and membrane interaction of the two fusion loops of glycoprotein B from herpes simplex type I virus. |
| title_sort | biophysical characterization and membrane interaction of the two fusion loops of glycoprotein b from herpes simplex type i virus |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22384173/pdf/?tool=EBI |
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