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Recognition of cellular receptors by bovine coronavirus.

Identifieur interne : 003531 ( PubMed/Curation ); précédent : 003530; suivant : 003532

Recognition of cellular receptors by bovine coronavirus.

Auteurs : B. Schultze [Allemagne] ; G. Herrler

Source :

RBID : pubmed:8032275

Descripteurs français

English descriptors

Abstract

Bovine coronavirus (BCV) initiates infection by attachment to cell surface receptors the crucial component of which is N-acetyl-9-O-acetylneuraminic acid. Inactivation of receptors by neuraminidase treatment and restoration of receptors by enzymatic resialylation of asialo-cells is described as a method to determine (i) the type of sialic acid that is recognized; (ii) the linkage specificity of the viral binding activity; (iii) the minimal amount of sialic acid required for virus attachment. Evidence is presented that both glycoproteins and glycolipids can serve as receptors for BCV provided they contain 9-O-acetylated sialic acid. A model is introduced proposing that after initial binding to sialic acid-containing receptors, the S-protein of BCV interacts with a specific protein receptor. This interaction may result in a conformational change that exposes a fusogenic domain and thus induces the fusion between the viral and the cellular membrane.

DOI: 10.1007/978-3-7091-9326-6_44
PubMed: 8032275

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pubmed:8032275

Le document en format XML

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<nlm:affiliation>Institut für Virologie, Philipps-Universität Marburg, Federal Republic of Germany.</nlm:affiliation>
<country xml:lang="fr">Allemagne</country>
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<term>Glycolipids (metabolism)</term>
<term>Glycoproteins (metabolism)</term>
<term>Influenzavirus C</term>
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<term>Acides sialiques (métabolisme)</term>
<term>Coronavirus bovin ()</term>
<term>Coronavirus bovin (métabolisme)</term>
<term>Données de séquences moléculaires</term>
<term>Glycolipides (métabolisme)</term>
<term>Glycoprotéine de spicule des coronavirus</term>
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<term>Glycolipids</term>
<term>Glycoproteins</term>
<term>Membrane Glycoproteins</term>
<term>Receptors, Virus</term>
<term>Sialic Acids</term>
<term>Viral Envelope Proteins</term>
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<term>Coronavirus, Bovine</term>
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<term>Coronavirus, Bovine</term>
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<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr">
<term>Acides sialiques</term>
<term>Coronavirus bovin</term>
<term>Glycolipides</term>
<term>Glycoprotéines</term>
<term>Glycoprotéines membranaires</term>
<term>Protéines de l'enveloppe virale</term>
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<term>Glycoprotéines membranaires</term>
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<div type="abstract" xml:lang="en">Bovine coronavirus (BCV) initiates infection by attachment to cell surface receptors the crucial component of which is N-acetyl-9-O-acetylneuraminic acid. Inactivation of receptors by neuraminidase treatment and restoration of receptors by enzymatic resialylation of asialo-cells is described as a method to determine (i) the type of sialic acid that is recognized; (ii) the linkage specificity of the viral binding activity; (iii) the minimal amount of sialic acid required for virus attachment. Evidence is presented that both glycoproteins and glycolipids can serve as receptors for BCV provided they contain 9-O-acetylated sialic acid. A model is introduced proposing that after initial binding to sialic acid-containing receptors, the S-protein of BCV interacts with a specific protein receptor. This interaction may result in a conformational change that exposes a fusogenic domain and thus induces the fusion between the viral and the cellular membrane.</div>
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