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    • 26. 发明申请
    • Nucleic acid encoding polypeptide involved in cellular entrance of the PRRS virus
    • 涉及PRRS病毒细胞入侵的核酸编码多肽
    • US20080057537A1
    • 2008-03-06
    • US11781558
    • 2007-07-23
    • Maurice PensaertHans NauwynckNathalie Vanderheijden
    • Maurice PensaertHans NauwynckNathalie Vanderheijden
    • C12N15/12C12N15/85C12N5/06C12N5/10C12N7/01C12P21/00
    • C07K14/705A61K38/00C12N2799/021
    • The present invention relates to a new polynucleotide that encodes a polypeptide involved in cellular entrance of PRRSV, to a recombinant vector comprising said polynucleotide, to a cell capable of expressing said polypeptide, a method of producing said polypeptide as well as to cell culture and to a novel method of producing the PRRSV virus. The present invention further relates to a method of identifying compounds that affect the PRRSV receptor function of the polypeptide as well as to the use of the polypeptide or identified compounds in the manufacture of medicaments. The present inventors have succeeded in isolating a protein from PAM membranes that seems to play a crucial role in virus entry into the cell. The elucidated nucleotide sequence encoding the protein, as well as the amino acid sequence of the protein, were compared with sequences stored in sequence databases. Surprisingly the putative PRRSV receptor provided by the present invention showed a great deal of homology to certain proteins belonging to the Siglec family.
    • 本发明涉及编码涉及PRRSV的细胞入口的多肽,包含所述多核苷酸的重组载体,能够表达所述多肽的细胞的新多核苷酸,产生所述多肽的方法以及细胞培养,以及 一种产生PRRSV病毒的新方法。 本发明还涉及鉴定影响多肽的PRRSV受体功能的化合物的方法,以及多肽或鉴定的化合物在制备药物中的用途。 本发明人成功地从PAM膜中分离蛋白质,该蛋白质似乎在病毒进入细胞中起关键作用。 将编码蛋白质的阐明的核苷酸序列以及蛋白质的氨基酸序列与序列数据库中存储的序列进行比较。 令人惊奇的是本发明提供的推定的PRRSV受体与属于Siglec家族的某些蛋白质具有大量的同源性。