Elmas Gök

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The interaction between thyroxine hormone and 7 hydroxycoumarin (7HC) was investigated using fluorescence quenching method. The experimental results showed that thyroxine could quench the fluorescence of 7HC by forming the 7HC-thyroxine complex with static quenching. The apparent binding constants (K) between 7HC and thyroxine were determined to be 1.51 x(More)
The binding interaction of lysozyme and umbelliferone (7hydroxcoumarin, 7HC) was investigated by UV–vis absorption and fluorescence quenching. It was obtained from fluorescence spectra that the fluorescence quenching of lysozyme by 7HC was probably a result of the formation of lysozyme-7HC complex and binding parameters were determined according to the(More)
The determination of the fluorophore to the protein molar ratio has been studied using fluorescence spectroscopy. The tyrosine fluorescence is measured from insulin (Ins) solutions at wavelengths lambda(ex)/lambda(em) = 276/300 nm and from fluorescein isothiocyanate (FITC) solutions at lambda(em)/lambda(em) = 494/518 nm. Series of solutions prepared from(More)
In this paper, we reported the syntheses and investigation of the modes of binding to DNA of the two new ethidium derivatives containing benzoyl and phenylacetyl groups of both amines at 3-and 8- positions. The interactions between calf thymus DNA (ct-DNA) and the two derivatives, 3,8-dibenzoylamino-5-ethyl-6-phenylphenantridinium cloride (E2) and(More)
A series of ionogenic poly(HEMA) membranes which were prepared by bulk copolymerization of 2-hydroxyethylmethacrylate (HEMA) and anionic or cationic comonomers, acrylic acid (AA), and dimethylaminoethylmethacrylate (DMAEMA), were characterized by equilibrium swelling measurements, surface free energies, and protein adsorption studies. It was found that(More)
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