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    • 5. 发明申请
    • EXPRESSION OF G PROTEIN COUPLED RECEPTORS IN YEAST
    • 表达G蛋白偶联受体在YEAST
    • WO1992005244A1
    • 1992-04-02
    • PCT/US1991006605
    • 1991-09-12
    • DUKE UNIVERSITY
    • DUKE UNIVERSITYKING, KlimDOHLMAN, Henrik, G.CARON, Marc, G.LEFKOWITZ, Robert, J.
    • C12N01/20
    • G01N33/566C07K14/39C07K14/4722C07K14/70571C07K2319/00C07K2319/02C07K2319/32C07K2319/61C07K2319/705C12N15/81C12Q1/6897G01N2333/726G01N2500/00
    • Disclosed is a transformed yeast cell containing a first heterologous DNA sequence which codes for a mammalian G protein coupled receptor and a second heterologous DNA sequence which codes for a mammalian G protein alpha subunit (mammalian G alpha ). The first and second heterologous DNA sequences are capable of expression in the cell, but the cell is incapable of expressing an endogenous G protein alpha -subnit (yeast G alpha ). The cells are useful for screening compounds which affect the rate of dissociation of G alpha from G beta gamma in a cell. Also disclosed is a novel DNA expression vector useful for making cells as described above. The vector contains a first segment comprising at least a fragment of the extreme amino-terminal coding sequence of a yeast G protein coupled receptor. A second segment is positioned downstream from the first segment (and in correct reading frame therewith), with the second segment comprising a DNA sequence encoding a heterologous G protein coupled receptor.
    • 公开了含有编码哺乳动物G蛋白偶联受体的第一异源DNA序列和编码哺乳动物G蛋白α亚基(哺乳动物Gα)的第二异源DNA序列的转化酵母细胞。 第一和第二异源DNA序列能够在细胞中表达,但是细胞不能表达内源性G蛋白α-亚基(酵母Gα)。 细胞可用于筛选影响细胞中Gα从Gβγ解离速率的化合物。 还公开了用于如上所述制备细胞的新型DNA表达载体。 载体含有至少包含酵母G蛋白偶联受体的极端氨基末端编码序列的片段的第一片段。 第二片段位于第一片段的下游(并且在其正确的阅读框架中),其中第二片段包含编码异源G蛋白偶联受体的DNA序列。