Low-pH Stability of Influenza A Virus Sialidase Contributing to Virus Replication and Pandemic.
Identifieur interne : 000031 ( 1968/Analysis ); précédent : 000030; suivant : 000032Low-pH Stability of Influenza A Virus Sialidase Contributing to Virus Replication and Pandemic.
Auteurs : Tadanobu Takahashi ; Takashi SuzukiSource :
- Biological & pharmaceutical bulletin [ 1347-5215 ] ; 2015.
Descripteurs français
- KwdFr :
- MESH :
- enzymologie : Virus de la grippe A.
- génétique : Protéines virales, Sialidase.
- pathogénicité : Virus de la grippe A.
- virologie : Grippe humaine.
- épidémiologie : Grippe humaine.
- Humains, Pandémies, Protéines virales, Réplication virale, Sialidase, Substitution d'acide aminé.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Neuraminidase, Viral Proteins.
- enzymology : Influenza A virus.
- epidemiology : Influenza, Human.
- chemical , genetics : Neuraminidase, Viral Proteins.
- pathogenicity : Influenza A virus.
- virology : Influenza, Human.
- Amino Acid Substitution, Humans, Pandemics, Virus Replication.
Abstract
The spike glycoprotein neuraminidase (NA) of influenza A virus (IAV) has sialidase activity that cleaves the terminal sialic acids (viral receptors) from oligosaccharide chains of glycoconjugates. A new antigenicity of viral surface glycoproteins for humans has pandemic potential. We found "low-pH stability of sialidase activity" in NA. The low-pH stability can maintain sialidase activity under acidic conditions of pH 4-5. For human IAVs, NAs of all pandemic viruses were low-pH-stable, whereas those of almost all human seasonal viruses were not. The low-pH stability was dependent on amino acid residues near the active site, the calcium ion-binding site, and the subunit interfaces of the NA homotetramer, suggesting effects of the active site and the homotetramer on structural stability. IAVs with the low-pH-stable NA showed much higher virus replication rates than those of IAVs with low-pH-unstable NA, which was correlated with maintenance of sialidase activity under an endocytic pathway of the viral cell entry mechanism, indicating contribution of low-pH stability to high replication rates of pandemic viruses. The low-pH-stable NA of the 1968 H3N2 pandemic virus was derived from the low-pH-stable NA of H2N2 human seasonal virus, one of two types classified by both low-pH stability in N2 NA and a phylogenetic tree of N2 NA genes. The 2009 H1N1 pandemic virus acquired low-pH-stable NA by two amino acid substitutions at the early stage of the 2009 pandemic. It is thought that low-pH stability contributes to infection spread in a pandemic through enhancement of virus replication.
DOI: 10.1248/bpb.b15-00120
PubMed: 26027822
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PubMed, to step Corpus: 000074
- to stream PubMed, to step Curation: 000074
- to stream PubMed, to step Checkpoint: 000066
- to stream Ncbi, to step Merge: 000B68
- to stream Ncbi, to step Curation: 000B68
- to stream Ncbi, to step Checkpoint: 000B68
- to stream Main, to step Merge: 000550
- to stream Main, to step Curation: 000549
- to stream Main, to step Exploration: 000549
- to stream 1968, to step Extraction: 000031
Links to Exploration step
pubmed:26027822Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Low-pH Stability of Influenza A Virus Sialidase Contributing to Virus Replication and Pandemic.</title>
<author><name sortKey="Takahashi, Tadanobu" sort="Takahashi, Tadanobu" uniqKey="Takahashi T" first="Tadanobu" last="Takahashi">Tadanobu Takahashi</name>
<affiliation><nlm:affiliation>Department of Biochemistry, School of Pharmaceutical Sciences,
University of Shizuoka.</nlm:affiliation>
<wicri:noCountry code="subField">
University of Shizuoka</wicri:noCountry>
</affiliation>
</author>
<author><name sortKey="Suzuki, Takashi" sort="Suzuki, Takashi" uniqKey="Suzuki T" first="Takashi" last="Suzuki">Takashi Suzuki</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PubMed</idno>
<date when="2015">2015</date>
<idno type="RBID">pubmed:26027822</idno>
<idno type="pmid">26027822</idno>
<idno type="doi">10.1248/bpb.b15-00120</idno>
<idno type="wicri:Area/PubMed/Corpus">000074</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000074</idno>
<idno type="wicri:Area/PubMed/Curation">000074</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000074</idno>
<idno type="wicri:Area/PubMed/Checkpoint">000066</idno>
<idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000066</idno>
<idno type="wicri:Area/Ncbi/Merge">000B68</idno>
<idno type="wicri:Area/Ncbi/Curation">000B68</idno>
<idno type="wicri:Area/Ncbi/Checkpoint">000B68</idno>
<idno type="wicri:Area/Main/Merge">000550</idno>
<idno type="wicri:Area/Main/Curation">000549</idno>
<idno type="wicri:Area/Main/Exploration">000549</idno>
<idno type="wicri:Area/1968/Extraction">000031</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en">Low-pH Stability of Influenza A Virus Sialidase Contributing to Virus Replication and Pandemic.</title>
<author><name sortKey="Takahashi, Tadanobu" sort="Takahashi, Tadanobu" uniqKey="Takahashi T" first="Tadanobu" last="Takahashi">Tadanobu Takahashi</name>
<affiliation><nlm:affiliation>Department of Biochemistry, School of Pharmaceutical Sciences,
University of Shizuoka.</nlm:affiliation>
<wicri:noCountry code="subField">
University of Shizuoka</wicri:noCountry>
</affiliation>
</author>
<author><name sortKey="Suzuki, Takashi" sort="Suzuki, Takashi" uniqKey="Suzuki T" first="Takashi" last="Suzuki">Takashi Suzuki</name>
</author>
</analytic>
<series><title level="j">Biological & pharmaceutical bulletin</title>
<idno type="eISSN">1347-5215</idno>
<imprint><date when="2015" type="published">2015</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amino Acid Substitution</term>
<term>Humans</term>
<term>Influenza A virus (enzymology)</term>
<term>Influenza A virus (pathogenicity)</term>
<term>Influenza, Human (epidemiology)</term>
<term>Influenza, Human (virology)</term>
<term>Neuraminidase (chemistry)</term>
<term>Neuraminidase (genetics)</term>
<term>Pandemics</term>
<term>Viral Proteins (chemistry)</term>
<term>Viral Proteins (genetics)</term>
<term>Virus Replication</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Grippe humaine (virologie)</term>
<term>Grippe humaine (épidémiologie)</term>
<term>Humains</term>
<term>Pandémies</term>
<term>Protéines virales ()</term>
<term>Protéines virales (génétique)</term>
<term>Réplication virale</term>
<term>Sialidase ()</term>
<term>Sialidase (génétique)</term>
<term>Substitution d'acide aminé</term>
<term>Virus de la grippe A (enzymologie)</term>
<term>Virus de la grippe A (pathogénicité)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Neuraminidase</term>
<term>Viral Proteins</term>
</keywords>
<keywords scheme="MESH" qualifier="enzymologie" xml:lang="fr"><term>Virus de la grippe A</term>
</keywords>
<keywords scheme="MESH" qualifier="enzymology" xml:lang="en"><term>Influenza A virus</term>
</keywords>
<keywords scheme="MESH" qualifier="epidemiology" xml:lang="en"><term>Influenza, Human</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>Neuraminidase</term>
<term>Viral Proteins</term>
</keywords>
<keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Protéines virales</term>
<term>Sialidase</term>
</keywords>
<keywords scheme="MESH" qualifier="pathogenicity" xml:lang="en"><term>Influenza A virus</term>
</keywords>
<keywords scheme="MESH" qualifier="pathogénicité" xml:lang="fr"><term>Virus de la grippe A</term>
</keywords>
<keywords scheme="MESH" qualifier="virologie" xml:lang="fr"><term>Grippe humaine</term>
</keywords>
<keywords scheme="MESH" qualifier="virology" xml:lang="en"><term>Influenza, Human</term>
</keywords>
<keywords scheme="MESH" qualifier="épidémiologie" xml:lang="fr"><term>Grippe humaine</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Amino Acid Substitution</term>
<term>Humans</term>
<term>Pandemics</term>
<term>Virus Replication</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Humains</term>
<term>Pandémies</term>
<term>Protéines virales</term>
<term>Réplication virale</term>
<term>Sialidase</term>
<term>Substitution d'acide aminé</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">The spike glycoprotein neuraminidase (NA) of influenza A virus (IAV) has sialidase activity that cleaves the terminal sialic acids (viral receptors) from oligosaccharide chains of glycoconjugates. A new antigenicity of viral surface glycoproteins for humans has pandemic potential. We found "low-pH stability of sialidase activity" in NA. The low-pH stability can maintain sialidase activity under acidic conditions of pH 4-5. For human IAVs, NAs of all pandemic viruses were low-pH-stable, whereas those of almost all human seasonal viruses were not. The low-pH stability was dependent on amino acid residues near the active site, the calcium ion-binding site, and the subunit interfaces of the NA homotetramer, suggesting effects of the active site and the homotetramer on structural stability. IAVs with the low-pH-stable NA showed much higher virus replication rates than those of IAVs with low-pH-unstable NA, which was correlated with maintenance of sialidase activity under an endocytic pathway of the viral cell entry mechanism, indicating contribution of low-pH stability to high replication rates of pandemic viruses. The low-pH-stable NA of the 1968 H3N2 pandemic virus was derived from the low-pH-stable NA of H2N2 human seasonal virus, one of two types classified by both low-pH stability in N2 NA and a phylogenetic tree of N2 NA genes. The 2009 H1N1 pandemic virus acquired low-pH-stable NA by two amino acid substitutions at the early stage of the 2009 pandemic. It is thought that low-pH stability contributes to infection spread in a pandemic through enhancement of virus replication. </div>
</front>
</TEI>
<affiliations><list></list>
<tree><noCountry><name sortKey="Suzuki, Takashi" sort="Suzuki, Takashi" uniqKey="Suzuki T" first="Takashi" last="Suzuki">Takashi Suzuki</name>
<name sortKey="Takahashi, Tadanobu" sort="Takahashi, Tadanobu" uniqKey="Takahashi T" first="Tadanobu" last="Takahashi">Tadanobu Takahashi</name>
</noCountry>
</tree>
</affiliations>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Sante/explor/H2N2V1/Data/1968/Analysis
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000031 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/1968/Analysis/biblio.hfd -nk 000031 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Sante |area= H2N2V1 |flux= 1968 |étape= Analysis |type= RBID |clé= pubmed:26027822 |texte= Low-pH Stability of Influenza A Virus Sialidase Contributing to Virus Replication and Pandemic. }}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/1968/Analysis/RBID.i -Sk "pubmed:26027822" \ | HfdSelect -Kh $EXPLOR_AREA/Data/1968/Analysis/biblio.hfd \ | NlmPubMed2Wicri -a H2N2V1
This area was generated with Dilib version V0.6.33. |