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    • 10. 发明授权
    • Ehrlichia disulfide bond formation proteins and uses thereof
    • 二硫键形成蛋白及其用途
    • US07824692B2
    • 2010-11-02
    • US12242865
    • 2008-09-30
    • David H. WalkerJere W. McBride
    • David H. WalkerJere W. McBride
    • A61K39/02C12P21/06C12P21/04C12N15/09C07K14/00C07H21/02C07H21/04
    • C12N9/0051A61K39/00A61K2039/522C07K14/29Y02A50/403
    • Novel genes encoding homologous immunoreactive thio-disulfide oxidoreductases, or disulfide bond formation (Dsb) proteins from Ehrlichia chaffeensis and Ehrlichia canis are disclosed. While the E. chaffeensis and E. canis Dsb proteins are at most only 31% or less homologous to other known Dsb proteins, the Ehrlichia Dsbs contain a cysteine active site, Cys-Gly-Tyr-Cys, similar to those in known Dsb proteins. As predicted by 15-amino acid identical N-terminal signal peptides, the proteins are primarily localized in the periplasm of E. chaffeensis and E. canis, possibly playing a role in antigenicity and pathogenesis. The present invention provides the nucleotide and amino acid sequences and expression vectors for the E. chaffeensis and E. canis dsb genes, antisera directed against the proteins, and kits to determine whether an individual or animal is infected with a given species of Ehrlichia.
    • 公开了编码同源免疫反应性硫代二硫化物氧化还原酶的新型基因或来自埃里希氏菌和埃氏杆菌的二硫键形成(Dsb)蛋白。 虽然E.Chaffeensis和E. canis Dsb蛋白质与其他已知的Dsb蛋白质最多只有31%或更少的同源性,但是Ehrlichia Dsbs含有与已知Dsb蛋白质相似的半胱氨酸活性位点Cys-Gly-Tyr-Cys 。 如通过15个氨基酸相同的N末端信号肽所预测的,这些蛋白质主要定位于E.Chaffeensis和E. canis的周质中,可能在抗原性和发病机理中起作用。 本发明提供了E.caffeensis和E.canis dsb基因的核苷酸和氨基酸序列和表达载体,针对蛋白质的抗血清,以及用于确定个体或动物是否用给定种类的埃里希菌感染的试剂盒。