N-(9-Acridinylthiocarbamoyl)amino acids (ATC-AA) II - VII were synthesized by reaction of amino acids with 9-isothiocyanatoacridine I, a new fluorescence labelling agent. The amino acid derivatives II - VII show high relative fluorescence, which is suitable for the determination of nanomolar amounts of ATC-AA. The kinetic measurements show that reaction of I with amino acids is 6 to 22 times faster than analogous reaction of phenyl isothiocyanate. The possibility of using 9-isothiocyanatoacridine for structure determination of proteins is discussed.
使用新的荧光标记剂9-异
硫氰酸基
吖啶(I)与
氨基酸反应合成了N-(9-
吖啶硫代
氨基甲酰)
氨基酸(ATC-
AA)II - VII。
氨基酸衍
生物II - VII显示出高相对荧光,适用于检测纳摩尔量的ATC-
AA。动力学测量表明,I与
氨基酸的反应速度比苯基异
硫氰酸酯的类似反应快6到22倍。讨论了使用9-异
硫氰酸基
吖啶进行蛋白质结构测定的可能性。