Electrochemical sensor using intercalative, redox-active moieties
    2.
    发明授权
    Electrochemical sensor using intercalative, redox-active moieties 有权
    使用插入型氧化还原活性部分的电化学传感器

    公开(公告)号:US07202037B2

    公开(公告)日:2007-04-10

    申请号:US10641884

    申请日:2003-08-14

    Abstract: Compositions and methods for electrochemical detection and localization of genetic point mutations, common DNA lesions and other base-stacking perturbations within oligonucleotide duplexes adsorbed onto electrodes and their use in biosensing technologies are described. An intercalative, redox-active moiety (such as an intercalator or nucleic acid-binding protein) is adhered and/or crosslinked to immobilized DNA duplexes at different separations from an electrode and probed electrochemically in the presence or absence of a non-intercalative, redox-active moiety. Interruptions in DNA-mediated electron-transfer caused by base-stacking perturbations, such as mutations or binding of a protein to its recognition site are reflected in a difference in electrical current, charge and/or potential.

    Abstract translation: 描述了吸附在电极上的寡核苷酸双链体内的遗传点突变,常见DNA病变和其他碱基堆叠扰动的电化学检测和定位及其在生物传感技术中的应用的组合物和方法。 插入的氧化还原活性部分(例如嵌入剂或核酸结合蛋白)在与电极的不同分离处固定和/或交联固定的DNA双链体并且在存在或不存在非插入式氧化还原的情况下电化学研究 活性部分。 由碱基堆叠扰动导致的DNA介导的电子转移的中断,例如蛋白质与其识别位点的突变或结合反映在电流,电荷和/或电位的差异中。

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