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    • 9. 发明申请
    • A MILD CHEMICALLY CLEAVABLE LINKER SYSTEM
    • 轻度化学可切割链接器系统
    • WO2008094205A3
    • 2008-11-06
    • PCT/US2007017233
    • 2007-08-01
    • UNIV LELAND STANFORD JUNIORBOGYO MATTHEW SVERHELST STEPHEN H LFONOVIC MARKO
    • BOGYO MATTHEW SVERHELST STEPHEN H LFONOVIC MARKO
    • C12Q1/00G01N33/00
    • G01N33/54353C07C271/20C07C2603/18C07D495/04C07K1/13
    • A linker system is provided where a small molecule reactive group, e.g., an activity based probe which binds to certain enzymes at the active site, is linked through an aryl diazo linker to an affinity molecule such as biotin. The reactive group may comprise a number of functionalities known to react with a specific target to be studied. This enables the probe to be exposed to analytes, such as proteins and bind specifically to them to form a complex having an affinity molecule allowing immobilization of the bound analyte on an affinity column or other support, e.g. with streptavidin. Then, the linker is cleaved without causing removal of the affinity group or dissociation of the probe from the analyte. The linker is cleaved under mild reducing conditions, e.g., dithionite. The probe is synthesized along with the linker on a solid support.
    • 提供了连接子系统,其中小分子反应基团,例如与活性位点上的某些酶结合的基于活性的探针,通过芳基重氮连接子与亲和分子如生物素连接。 反应基团可以包含许多已知与待研究的特定靶标反应的官能团。 这使得探针暴露于分析物例如蛋白质并且与它们特异性结合以形成具有亲和分子的复合物,从而允许将结合的分析物固定在亲和柱或其他支持物上, 与链霉抗生物素蛋白。 然后,接头被切割而不引起亲和基团或探针与分析物的解离。 接头在温和还原条件下裂解,例如连二亚硫酸盐。 探针在固体支持物上与连接物一起合成。