title: Fluorescent labeling of proteins with amine-specific 1,3,2-(2H)-dioxaborine polymethine dye.
abstract: A novel water-soluble amine-reactive dioxaborine trimethine dye was synthesized in a good yield and characterized. The potential of the dye as a specific reagent for protein labeling was demonstrated with bovine serum albumin and lysozyme. Its interaction with proteins was studied by fluorescence spectroscopy and gel electrophoresis. The covalent binding of this almost nonfluorescent dye to proteins results in a 75- to 78-fold increase of its emission intensity accompanied by a red shift of the fluorescence emission maximum by 27 to 45 nm, with fluorescence wavelengths of labeled biomolecules being more than 600 nm. The dye does not require activation for the labeling reaction and can be used in a variety of bioassay applications.
authors: Institute of Organic Chemistry, National Academy of Sciences, 02660 Kyiv, Ukraine.
authors: Andriy
authors: A
authors: Gerasov
authors: Mykola
authors: M
authors: Shandura
authors: Yuriy
authors: Y
authors: Kovtun
authors: Mykhaylo
authors: M
authors: Losytskyy
authors: Valentyna
authors: V
authors: Negrutska
authors: Igor
authors: I
authors: Dubey
mesh_terms: D000588:Amines / Q000737:chemistry*; D000818:Animals; D001896:Boron Compounds / Q000737:chemistry*; D002417:Cattle; D005456:Fluorescent Dyes / Q000737:chemistry*; D009113:Muramidase / Q000737:chemistry*; D012710:Serum Albumin, Bovine / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013379:Substrate Specificity
chemical_list: D000588:Amines; D001896:Boron Compounds; D005456:Fluorescent Dyes; D012710:Serum Albumin, Bovine; C421864:hen egg lysozyme; D009113:Muramidase