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    • 4. 发明申请
    • STREPTAVIDIN MUTEINS AND METHODS OF USING THEM
    • STREPTAVIDIN MUTEINS和使用它们的方法
    • WO2014076277A1
    • 2014-05-22
    • PCT/EP2013/074070
    • 2013-11-18
    • IBA GMBH
    • SCHMIDT, Thomas
    • C07K14/36
    • C07K14/36C07K1/22C07K2319/22C07K2319/70C12N15/62G01N33/68G01N2333/36
    • The invention concerns novel streptavidin muteins. In one embodiment such a mutein (a) contains at least one mutation in the region of the amino acid positions 115 to 121 with reference to the amino acid sequence of wild type streptavidin as set forth at SEQ ID NO: 15 and (b) has a higher binding affinity than each of (i) a streptavidin mutein that comprises the amino acid sequence Val44 -Thr45- Ala46-Arg47 (SEQ ID NO: 98), or (ii) a streptavidin mutein that comprises the amino acid sequence He44-Gly45- Ala46-Arg47 (SEQ ID NO: 99) at amino acid positions 44 to 47, or (iii) wild type-streptavidin (SEQ ID NO: 15) for peptide ligands comprising the amino acid sequence Trp-Ser-His-Pro-Gln- Phe-Glu-Lys (SEQ ID NO: 100).
    • 本发明涉及新型链霉亲和素突变蛋白。 在一个实施方案中,这样的突变蛋白(a)在氨基酸位置115至121的区域中包含参考SEQ ID NO:15所示的野生型链霉亲和素的氨基酸序列的至少一个突变,(b)具有 (i)包含氨基酸序列Val44-Thr45-Ala46-Arg47(SEQ ID NO:98)的链霉抗生物素蛋白突变蛋白(i)链霉亲和素突变蛋白的结合亲和力高,或(ii)包含氨基酸序列He44-Gly45 在氨基酸序列44至47的Ala46-Arg47(SEQ ID NO:99),或(iii)包含氨基酸序列Trp-Ser-His-Pro-的肽配体的野生型链霉亲和素(SEQ ID NO:15) Gln-Phe-Glu-Lys(SEQ ID NO:100)。