Evolutional analysis of human influenza A virus N2 neuraminidase genes based on the transition of the low-pH stability of sialidase activity.
Identifieur interne : 000133 ( 1957/Analysis ); précédent : 000132; suivant : 000134Evolutional analysis of human influenza A virus N2 neuraminidase genes based on the transition of the low-pH stability of sialidase activity.
Auteurs : Takashi Suzuki [Japon] ; Tadanobu Takahashi ; Takehiko Saito ; Chao-Tan Guo ; Kazuya I-P Jwa Hidari ; Daisei Miyamoto ; Yasuo SuzukiSource :
- FEBS letters [ 0014-5793 ] ; 2004.
Descripteurs français
- KwdFr :
- Animaux, Canards, Concentration en ions d'hydrogène, Données de séquences moléculaires, Embryon de poulet, Humains, Sialidase (génétique), Sialidase (métabolisme), Séquence d'acides aminés, Séquence nucléotidique, Virus de la grippe A (enzymologie), Virus de la grippe A (génétique), Évolution moléculaire.
- MESH :
- enzymologie : Virus de la grippe A.
- génétique : Sialidase, Virus de la grippe A.
- métabolisme : Sialidase.
- Animaux, Canards, Concentration en ions d'hydrogène, Données de séquences moléculaires, Embryon de poulet, Humains, Séquence d'acides aminés, Séquence nucléotidique, Évolution moléculaire.
English descriptors
- KwdEn :
- MESH :
- chemical , genetics : Neuraminidase.
- enzymology : Influenza A virus.
- genetics : Influenza A virus.
- chemical , metabolism : Neuraminidase.
- Amino Acid Sequence, Animals, Base Sequence, Chick Embryo, Ducks, Evolution, Molecular, Humans, Hydrogen-Ion Concentration, Molecular Sequence Data.
Abstract
The 1957 and 1968 human pandemic influenza A virus strains as well as duck viruses possess sialidase activity under low-pH conditions, but human H3N2 strains isolated after 1968 do not possess such activity. We investigated the transition of avian (duck)-like low-pH stability of sialidase activities with the evolution of N2 neuraminidase (NA) genes in human influenza A virus strains. We found that the NA genes of H3N2 viruses isolated from 1971 to 1982 had evolved from the side branches of NA genes of H2N2 epidemic strains isolated in 1968 that were characterized by the low-pH-unstable sialidase activities, though the NA genes of the 1968 pandemic strains preserved the low-pH-stable sialidase. These findings suggest that the prototype of the H3N2 epidemic influenza strains isolated after 1968 probably acquired the NA gene from the H2N2 low-pH-unstable sialidase strain by second genetic reassortment in humans.
DOI: 10.1016/s0014-5793(03)01503-5
PubMed: 14741372
Affiliations:
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pubmed:14741372Le document en format XML
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xml:lang="en">Evolutional analysis of human influenza A virus N2 neuraminidase genes based on the transition of the low-pH stability of sialidase activity.</title><author><name sortKey="Suzuki, Takashi" sort="Suzuki, Takashi" uniqKey="Suzuki T" first="Takashi" last="Suzuki">Takashi Suzuki</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biochemistry, University of Shizuoka, School of Pharmaceutical Sciences, CREST, JST, and COE Program in the 21st century, Shizuoka 422-8526, Japan. suzukit@u-shizuoka-ken.ac.jp</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Biochemistry, University of Shizuoka, School of Pharmaceutical Sciences, CREST, JST, and COE Program in the 21st century, Shizuoka 422-8526</wicri:regionArea><wicri:noRegion>Shizuoka 422-8526</wicri:noRegion></affiliation></author><author><name sortKey="Takahashi, Tadanobu" sort="Takahashi, Tadanobu" uniqKey="Takahashi T" first="Tadanobu" last="Takahashi">Tadanobu Takahashi</name></author><author><name sortKey="Saito, Takehiko" sort="Saito, Takehiko" uniqKey="Saito T" first="Takehiko" last="Saito">Takehiko Saito</name></author><author><name sortKey="Guo, Chao Tan" sort="Guo, Chao Tan" uniqKey="Guo C" first="Chao-Tan" last="Guo">Chao-Tan Guo</name></author><author><name sortKey="Hidari, Kazuya I P Jwa" sort="Hidari, Kazuya I P Jwa" uniqKey="Hidari K" first="Kazuya I-P Jwa" last="Hidari">Kazuya I-P Jwa Hidari</name></author><author><name sortKey="Miyamoto, Daisei" sort="Miyamoto, Daisei" uniqKey="Miyamoto D" first="Daisei" last="Miyamoto">Daisei Miyamoto</name></author><author><name sortKey="Suzuki, Yasuo" sort="Suzuki, Yasuo" uniqKey="Suzuki Y" first="Yasuo" last="Suzuki">Yasuo Suzuki</name></author></analytic><series><title level="j">FEBS letters</title><idno type="ISSN">0014-5793</idno><imprint><date when="2004" type="published">2004</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" 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We investigated the transition of avian (duck)-like low-pH stability of sialidase activities with the evolution of N2 neuraminidase (NA) genes in human influenza A virus strains. We found that the NA genes of H3N2 viruses isolated from 1971 to 1982 had evolved from the side branches of NA genes of H2N2 epidemic strains isolated in 1968 that were characterized by the low-pH-unstable sialidase activities, though the NA genes of the 1968 pandemic strains preserved the low-pH-stable sialidase. These findings suggest that the prototype of the H3N2 epidemic influenza strains isolated after 1968 probably acquired the NA gene from the H2N2 low-pH-unstable sialidase strain by second genetic reassortment in humans.</div></front></TEI><affiliations><list><country><li>Japon</li></country></list><tree><noCountry><name sortKey="Guo, Chao Tan" sort="Guo, Chao Tan" uniqKey="Guo C" first="Chao-Tan" last="Guo">Chao-Tan Guo</name><name sortKey="Hidari, Kazuya I P Jwa" sort="Hidari, Kazuya I P Jwa" uniqKey="Hidari K" first="Kazuya I-P Jwa" last="Hidari">Kazuya I-P Jwa Hidari</name><name sortKey="Miyamoto, Daisei" sort="Miyamoto, Daisei" uniqKey="Miyamoto D" first="Daisei" last="Miyamoto">Daisei Miyamoto</name><name sortKey="Saito, Takehiko" sort="Saito, Takehiko" uniqKey="Saito T" first="Takehiko" last="Saito">Takehiko Saito</name><name sortKey="Suzuki, Yasuo" sort="Suzuki, Yasuo" uniqKey="Suzuki Y" first="Yasuo" last="Suzuki">Yasuo Suzuki</name><name sortKey="Takahashi, Tadanobu" sort="Takahashi, Tadanobu" uniqKey="Takahashi T" first="Tadanobu" last="Takahashi">Tadanobu Takahashi</name></noCountry><country name="Japon"><noRegion><name sortKey="Suzuki, Takashi" sort="Suzuki, Takashi" uniqKey="Suzuki T" first="Takashi" last="Suzuki">Takashi Suzuki</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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