Influenza viruses differ in recognition of 4- O -acetyl substitution of sialic acid receptor determinant
Identifieur interne : 001F46 ( Main/Exploration ); précédent : 001F45; suivant : 001F47Influenza viruses differ in recognition of 4- O -acetyl substitution of sialic acid receptor determinant
Auteurs : M. N. Matrosovich [Russie] ; A. S. Gambaryan [Russie] ; M. P. Chumakov [Russie]Source :
- Virology [ 0042-6822 ] ; 1992.
Descripteurs français
- KwdFr :
- Acides sialiques (), Acides sialiques (métabolisme), Hémagglutinines virales (métabolisme), Hémagglutinines virales (ultrastructure), Liaison aux protéines, Modèles moléculaires, Orthomyxoviridae (métabolisme), Relation structure-activité, Récepteurs viraux (), Récepteurs viraux (métabolisme), Sialidase (pharmacologie), Séquence glucidique, alpha-Macroglobulines.
- MESH :
- métabolisme : Acides sialiques, Hémagglutinines virales, Orthomyxoviridae, Récepteurs viraux.
- pharmacologie : Sialidase.
- ultrastructure : Hémagglutinines virales.
- Acides sialiques, Liaison aux protéines, Modèles moléculaires, Relation structure-activité, Récepteurs viraux, Séquence glucidique, alpha-Macroglobulines.
English descriptors
- KwdEn :
- Carbohydrate Sequence, Hemagglutinins, Viral (metabolism), Hemagglutinins, Viral (ultrastructure), Models, Molecular, Neuraminidase (pharmacology), Orthomyxoviridae (metabolism), Protein Binding, Receptors, Virus (chemistry), Receptors, Virus (metabolism), Sialic Acids (chemistry), Sialic Acids (metabolism), Structure-Activity Relationship, alpha-Macroglobulins.
- MESH :
- chemical , chemistry : Receptors, Virus, Sialic Acids.
- chemical , metabolism : Hemagglutinins, Viral, Receptors, Virus, Sialic Acids.
- chemical , pharmacology : Neuraminidase.
- chemical , ultrastructure : Hemagglutinins, Viral.
- metabolism : Orthomyxoviridae.
- Teeft :
- Academic press, Binding affinity, Carbohydrate Sequence, Carbonyl oxygen, Conjugate concentration, Influenza, Influenza viruses, Lvanovsky institute, Minimum energy conformation, Models, Molecular, Molecular modeling, Neu5ac, Paulson, Protein Binding, Reaction mixture, Same time, Seed stocks, Short communications, Sialic acid, Structural model, Structure-Activity Relationship, Substitution, Virology, Virus, alpha-Macroglobulins.
Abstract
Abstract: Equine α2 macroglobulin (EM), known to contain both Neu5Ac and Neu4,5Ac2 sialic acid residues, was treated with Vibrio cholerae sialidase for the selective removal of Neu5Ac and was compared with the untreated EM for its binding by a panel of influenza viruses. Type A H3N2 virus strains having Leu in position 226 of their hemagglutinin (HA) changed the affinity for sialidase-treated EM only slightly, if at all, indicative of their ability to bind the 4-0-Ac-substituted Neu5Ac receptor determinant. At the same time, all B and H1 N1 viruses, some H2N2 variants, as well as H3N2 strains with 226 Gin studied were unable to recognize Neu4,5Ac2 moieties of EM. Molecular modeling based on the known 3-D structure of H3 HA complexed with sialyllactose (Weis et al. (1988) Nature 333, 426–431) predicts that the 4-0-Ac substituent of sialic acid would protrude with its carbonyl oxygen inside the receptor-binding site of HA, thus possibly interfering with binding.
Url:
DOI: 10.1016/0042-6822(92)90541-V
Affiliations:
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Le document en format XML
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<term>Hemagglutinins, Viral (ultrastructure)</term>
<term>Models, Molecular</term>
<term>Neuraminidase (pharmacology)</term>
<term>Orthomyxoviridae (metabolism)</term>
<term>Protein Binding</term>
<term>Receptors, Virus (chemistry)</term>
<term>Receptors, Virus (metabolism)</term>
<term>Sialic Acids (chemistry)</term>
<term>Sialic Acids (metabolism)</term>
<term>Structure-Activity Relationship</term>
<term>alpha-Macroglobulins</term>
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<term>Acides sialiques (métabolisme)</term>
<term>Hémagglutinines virales (métabolisme)</term>
<term>Hémagglutinines virales (ultrastructure)</term>
<term>Liaison aux protéines</term>
<term>Modèles moléculaires</term>
<term>Orthomyxoviridae (métabolisme)</term>
<term>Relation structure-activité</term>
<term>Récepteurs viraux ()</term>
<term>Récepteurs viraux (métabolisme)</term>
<term>Sialidase (pharmacologie)</term>
<term>Séquence glucidique</term>
<term>alpha-Macroglobulines</term>
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<term>Sialic Acids</term>
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<term>Receptors, Virus</term>
<term>Sialic Acids</term>
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<term>Binding affinity</term>
<term>Carbohydrate Sequence</term>
<term>Carbonyl oxygen</term>
<term>Conjugate concentration</term>
<term>Influenza</term>
<term>Influenza viruses</term>
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<term>Relation structure-activité</term>
<term>Récepteurs viraux</term>
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<front><div type="abstract" xml:lang="en">Abstract: Equine α2 macroglobulin (EM), known to contain both Neu5Ac and Neu4,5Ac2 sialic acid residues, was treated with Vibrio cholerae sialidase for the selective removal of Neu5Ac and was compared with the untreated EM for its binding by a panel of influenza viruses. Type A H3N2 virus strains having Leu in position 226 of their hemagglutinin (HA) changed the affinity for sialidase-treated EM only slightly, if at all, indicative of their ability to bind the 4-0-Ac-substituted Neu5Ac receptor determinant. At the same time, all B and H1 N1 viruses, some H2N2 variants, as well as H3N2 strains with 226 Gin studied were unable to recognize Neu4,5Ac2 moieties of EM. Molecular modeling based on the known 3-D structure of H3 HA complexed with sialyllactose (Weis et al. (1988) Nature 333, 426–431) predicts that the 4-0-Ac substituent of sialic acid would protrude with its carbonyl oxygen inside the receptor-binding site of HA, thus possibly interfering with binding.</div>
</front>
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