发明名称 |
Secreted neural adhesion proteins |
摘要 |
The invention features a method for identifying a cDNA nucleic acid encoding a mammalian protein having a signal sequence, which method includes the following steps: (a) providing library of mammalian cDNA; (b) ligating the library of mammalian cDNA to DNA encoding alkaline phosphatase lacking both a signal sequence and a membrane anchor sequence to form ligated DNA; 8 transforming bacterial cells with the ligated DNA to create a bacterial cell clone library; (d) isolating DNA comprising the mammalian cDNA from at least one clone in the bacterial cell clone library; (e) separately transfecting DNA isolated from clones in step (d) into mammalian cells which do not express alkaline phosphatase to create a mammalian cell clone library wherein each clone in the mammalian cell clone library corresponds to a clone in the bacterial cell clone library; (f) identifying a clone in the mammalian cell clone library which expresses alkaline phosphatase; (g) identifying the clone in the bacterial cell clone library corresponding to the clone in the mammalian cell clone library identified in step (f); and (h) isolating and sequencing a portion of the mammalian cDNA present in the bacterial cell library clone identified in step (g) to identify a mammalian cDNA encoding a mammalian protein having a signal sequence.
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申请公布号 |
US6395872(B1) |
申请公布日期 |
2002.05.28 |
申请号 |
US20010991326 |
申请日期 |
2001.11.21 |
申请人 |
MILLENNIUM PHARMACEUTICALS, INC. |
发明人 |
MCCARTHY SEAN ANTHONY;GEARING DAVID PAUL;LEVINSON DOUGLAS ADAM |
分类号 |
C12N15/10;C12N15/85;C12Q1/68;(IPC1-7):C07K7/00;C07K14/47 |
主分类号 |
C12N15/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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