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Research Article

Complete nucleotide sequence of the neuraminidase gene of human influenza virus A/WSN/33.

A L Hiti, D P Nayak
A L Hiti
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D P Nayak
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DOI: 
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ABSTRACT

The complete nucleotide sequence of the neuraminidase (NA) gene of WSN/33 (H1N1) virus was determined. The entire sequence was derived from the insert of cDNA clones, except the last 20 nucleotides, which were determined by primer extension. The WSN NA gene contained 1,409 nucleotides beginning at the 5' end (sense strand), with an untranslated region of 19 nucleotides followed by 1,359 nucleotides coding for 453 amino acids and finally ending with a 31-nucleotide sequence of untranslated region at the 3' termini. The amino acid sequence of WSN NA, as deduced from the DNA sequence, showed the presence of a stretch of 29 amino acids (7 to 35) enriched in hydrophobic amino acids, which may anchor the protein into the viral or cellular membrane. When compared with the PR8 NA sequence, WSN NA appeared to possess a similar structure, including the identical location of all cysteine and proline residues. However, WSN NA contained only three of the five potential glycosylation sites present in PR8 NA. Additionally, WSN NA contained a substitution of a five-amino acid sequence for a six-amino acid sequence in PR8 NA. The possible significance of these sequence changes in the primary structure of WSN NA in the unique role of WSN NA as a virulence factor in mouse brain and MDBK cells is discussed.

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Complete nucleotide sequence of the neuraminidase gene of human influenza virus A/WSN/33.
A L Hiti, D P Nayak
Journal of Virology Feb 1982, 41 (2) 730-734; DOI:

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Complete nucleotide sequence of the neuraminidase gene of human influenza virus A/WSN/33.
A L Hiti, D P Nayak
Journal of Virology Feb 1982, 41 (2) 730-734; DOI:
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