Unsymmetrical cyanine dyes that incorporate an aza-benzazolium ring moiety are described, including cyanine dyes substituted by a cationic side chain, monomeric and dimeric cyanine dyes, chemically reactive cyanine dyes, and conjugates of cyanine dyes. The subject dyes are virtually non-fluorescent when diluted in aqueous solution, but exhibit bright fluorescence when associated with nucleic acid polymers such as DNA or RNA, or when associated with detergent-complexed proteins. A variety of applications are described for detection and quantitation of nucleic acids and detergent-complexed proteins in a variety of samples, including solutions, electrophoretic gels, cells, and microorganisms.
本文描述了包含
氮杂
苯并咪唑环基团的非对称青光菁
染料,包括带有阳离子侧链的青光菁
染料、单体和二聚体青光菁
染料、
化学反应性青光菁
染料以及青光菁
染料的共轭物。当在
水溶液中稀释时,这些
染料几乎不发荧光,但当与
核酸聚合物(如DNA或RNA)或与洗涤剂复合的蛋白质结合时,会展现出明亮的荧光。本文描述了在各种样品中检测和定量
核酸和洗涤剂复合蛋白质的各种应用,包括溶液、电泳凝胶、细胞和微
生物。