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Title

Subcellular location and topology of severe acute respiratory syndrome coronavirus envelope protein

AuthorsNieto-Torres, José L. ; DeDiego, Marta L. CSIC ORCID ; Álvarez, Enrique ; Jiménez-Guardeño, José Manuel CSIC ; Regla-Nava, José Ángel ; Llorente, Mercedes; Kremer, Leonor CSIC ORCID ; Shuo, Shen; Enjuanes Sánchez, Luis CSIC ORCID
KeywordsSARS
Coronavirus
Envelope protein
Antibodies
Location
Ion channel
Topology
Issue Date5-Jul-2011
PublisherAcademic Press
CitationVirology 415(2): 69-82 (2011)
AbstractSevere acute respiratory syndrome (SARS) coronavirus (CoV) envelope (E) protein is a transmembrane protein. Several subcellular locations and topological conformations of E protein have been proposed. To identify the correct ones, polyclonal and monoclonal antibodies specific for the amino or the carboxy terminus of E protein, respectively, were generated. E protein was mainly found in the endoplasmic reticulum-Golgi intermediate compartment (ERGIC) of cells transfected with a plasmid encoding E protein or infected with SARS-CoV. No evidence of E protein presence in the plasma membrane was found by using immunofluorescence, immunoelectron microscopy and cell surface protein labeling. In addition, measurement of plasma membrane voltage gated ion channel activity by whole-cell patch clamp suggested that E protein was not present in the plasma membrane. A topological conformation in which SARS-CoV E protein amino terminus is oriented towards the lumen of intracellular membranes and carboxy terminus faces cell cytoplasm is proposed. © 2011 Elsevier Inc.
Publisher version (URL)https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4726981
URIhttp://hdl.handle.net/10261/204166
DOI10.1016/j.virol.2011.03.029
Identifiersdoi: 10.1016/j.virol.2011.03.029
issn: 0042-6822
pmid: 21524776
Appears in Collections:(VICYT) Colección Especial COVID-19
(CNB) Artículos

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