The purpose of the present invention is to provide a compound that specifically binds to the base sequence of a double-stranded nucleic acid molecule. The compound can reduce the electrochemical signal/noise ratio (S/N) in electrochemical detection, and as a result, the detection sensitivity (precision) will be greatly improved so as to enable the determination of an ultratrace amount of nucleic acid molecule. The present invention relates to a ferrocene compound represented by the following general formula (I):
wherein “A” represents a divalent ferrocene-containing linker or ferrocene-1,1′-yl, R
2
represents a hydrogen atom or alkyl; “n” and “m” represent any natural numbers; and “V” and “X” represent the pyrrole-imidazole-polyamide (PIPA); to a ligand consisting of said ferrocene compound for sequence-specific detection of double-stranded nucleic acid molecules; to a method for electrochemical detection of double-stranded nucleic acid molecules 8 with the use of said ligand; and to an apparatus or device for the electrochemical detection with the use of said ligand.
本发明的目的是提供一种能够特异性结合双链核酸分子碱基序列的化合物。该化合物可降低电
化学检测中的信号/噪声比(S/N),从而大大提高检测灵敏度(精度),使得能够确定极微量的核酸分子。本发明涉及一种由下述通式(I)表示的
二茂铁化合物:其中“A”表示含
二茂铁的二价连接基或
二茂铁-1,1'-基,R2表示氢原子或烷基;“n”和“m”表示任意自然数;“V”和“X”表示
吡咯-
咪唑-
多肽(
PIPA);以及利用该化合物制备的
配体,用于序列特异性检测双链核酸分子、利用该
配体进行电
化学检测双链核酸分子的方法,以及利用该
配体进行电
化学检测的装置或设备。