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Structure of a Classical Broadly Neutralizing Stem Antibody in Complex with a Pandemic H2 Influenza Virus Hemagglutinin

Identifieur interne : 000049 ( 1957/Analysis ); précédent : 000048; suivant : 000050

Structure of a Classical Broadly Neutralizing Stem Antibody in Complex with a Pandemic H2 Influenza Virus Hemagglutinin

Auteurs : Cyrille Dreyfus ; Damian C. Ekiert ; Ian A. Wilson

Source :

RBID : PMC:3676097

Descripteurs français

English descriptors

Abstract

We report the structural characterization of the first antibody identified to cross-neutralize multiple subtypes of influenza A viruses. The crystal structure of mouse antibody C179 bound to the pandemic 1957 H2N2 hemagglutinin (HA) reveals that it targets an epitope on the HA stem similar to those targeted by the recently identified human broadly neutralizing antibodies. C179 also inhibits the low-pH conformational change of the HA but uses a different angle of approach and both heavy and light chains.


Url:
DOI: 10.1128/JVI.02975-12
PubMed: 23552413
PubMed Central: 3676097


Affiliations:


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PMC:3676097

Le document en format XML

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<term>Amino Acid Sequence</term>
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<term>Antibodies, Monoclonal (chemistry)</term>
<term>Antibodies, Monoclonal (immunology)</term>
<term>Antibodies, Neutralizing (chemistry)</term>
<term>Antibodies, Neutralizing (immunology)</term>
<term>Antibodies, Viral (chemistry)</term>
<term>Antibodies, Viral (immunology)</term>
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<term>Crystallography, X-Ray</term>
<term>Epitopes (chemistry)</term>
<term>Epitopes (immunology)</term>
<term>Hemagglutinin Glycoproteins, Influenza Virus (immunology)</term>
<term>Humans</term>
<term>Influenza A Virus, H2N2 Subtype (immunology)</term>
<term>Influenza A virus (classification)</term>
<term>Influenza A virus (immunology)</term>
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<term>Anticorps monoclonaux (immunologie)</term>
<term>Anticorps neutralisants ()</term>
<term>Anticorps neutralisants (immunologie)</term>
<term>Cristallographie aux rayons X</term>
<term>Données de séquences moléculaires</term>
<term>Glycoprotéine hémagglutinine du virus influenza (immunologie)</term>
<term>Grippe humaine (immunologie)</term>
<term>Grippe humaine (virologie)</term>
<term>Humains</term>
<term>Modèles moléculaires</term>
<term>Pandémies</term>
<term>Réactions croisées</term>
<term>Souris</term>
<term>Sous-type H2N2 du virus de la grippe A (immunologie)</term>
<term>Séquence d'acides aminés</term>
<term>Tests de neutralisation</term>
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<term>Anticorps neutralisants</term>
<term>Cristallographie aux rayons X</term>
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<p>We report the structural characterization of the first antibody identified to cross-neutralize multiple subtypes of influenza A viruses. The crystal structure of mouse antibody C179 bound to the pandemic 1957 H2N2 hemagglutinin (HA) reveals that it targets an epitope on the HA stem similar to those targeted by the recently identified human broadly neutralizing antibodies. C179 also inhibits the low-pH conformational change of the HA but uses a different angle of approach and both heavy and light chains.</p>
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