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鹅源新城疫病毒血凝素-神经氨酸酶基因的序列分析 被引量:14

Sequence Analysis of Hemagglutinin-neuraminidase Gene of Newcastle Disease Virus Causing Clinical Disease in Geese
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摘要 Six isolates of Newcastle disease virus were derived from south and east China regions during the disease outbreaks called "avian paramyxovirus infection of geese" or "geese paramyxovirus infection",and partial sequence analysis of hemagglutinin-neuraminidase(HN) gene was carried out to identify the genetic characteristics of these goose isolatesA 1905 nucleotide portion of HN gene of each of the 6 isolates was sequenced,the results revealed that the coding region of their HN genes are all 1716 nucleotides in length,which can encode 571 amino acid residues aloneThe coding region is followed by a noncoding sequence of 189 nucleotidesThough they diverged only 08%-37% from each other in the nucleotide sequences of coding region,they differed by 175%-179% to F48E8, a standard challenge strain of chicken originCysteine residues are well conserved throughout the amino acid sequences,while the number of the potential glycosylation sites varys from 4 to 6Residue positions Thr 48,His 54,Ser 77,Ala 266,His 340 and Lys 384 are also highly conserved in the 6 goose isolatesThe corresponding residues in other NDV strains are commonly Met 48,Ser 54,Asn 77,Ile 266,Tyr 340 and Glu 384However,the sequences of receptor-binding related regions show no difference to the 14 reference strains from domestic or Six isolates of Newcastle disease virus were derived from south and east China regions during the disease outbreaks called 'avian paramyxovirus infection of geese' or 'geese paramyxovirus infection',and partial sequence analysis of hemagglutinin-neuraminidase(HN) gene was carried out to identify the genetic characteristics of these goose isolatesA 1905 nucleotide portion of HN gene of each of the 6 isolates was sequenced,the results revealed that the coding region of their HN genes are all 1716 nucleotides in length,which can encode 571 amino acid residues aloneThe coding region is followed by a noncoding sequence of 189 nucleotidesThough they diverged only 08%-37% from each other in the nucleotide sequences of coding region,they differed by 175%-179% to F48E8, a standard challenge strain of chicken originCysteine residues are well conserved throughout the amino acid sequences,while the number of the potential glycosylation sites varys from 4 to 6Residue positions Thr 48,His 54,Ser 77,Ala 266,His 340 and Lys 384 are also highly conserved in the 6 goose isolatesThe corresponding residues in other NDV strains are commonly Met 48,Ser 54,Asn 77,Ile 266,Tyr 340 and Glu 384However,the sequences of receptor-binding related regions show no difference to the 14 reference strains from domestic or abroad
出处 《病毒学报》 CAS CSCD 北大核心 2003年第2期176-178,共3页 Chinese Journal of Virology
基金 国家自然科学基金重大项目(39893290) 973项目(G19990199)
关键词 鹅源新城疫病毒 血凝素 神经氨酸酶基因 序列分析 goose Newcastle disease virus hemagglutinin-neuraminidase gene sequence analysis
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参考文献7

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二级参考文献9

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