Solution interactions between the uranyl cation [UO22+] and histidine, N-acetyl-histidine, tyrosine, and N-acetyl-tyrosine

Xie, Wei; Badawi, Ahmed M.; Huang, Huan Chang; Horn, J. David Van

doi:10.1016/j.jinorgbio.2008.09.003

Cited by 7 publications

(2 citation statements)

References 30 publications

(38 reference statements)

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“…The next step consists of the removal of N and CO from the ligand molecule. Finally, over 650 C there remains a residue of U 3 O 8 [17,20] (resulting from elimination of one oxygen atom from three molecules UO 3 ).…”

Section: Thermal Studiesmentioning

confidence: 99%

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Synthesis and characterization of uranyl(VI) chiral Schiff-base complexes derived from salicylaldehyde and L-aminoacids

Cozaciuc

Postolachi

Gradinaru

et al. 2012

Journal of Coordination Chemistry

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Complexes of uranyl(VI) (U(VI)) with tridentate ligands derived from salicylaldehyde and aminoacids are reported, bis 2-((2-hydroxybenzylidene)amino)acetic acid U(VI), UO 2 (SalGly) 2 (1); tri (4), and tri aqua 2-((2-hydroxybenzylidene)amino)-4-(methylthio)butanoic acid U(VI) nitrate, [UO 2 (SalMet) (H 2 O) 3 ]NO 3 (5). The characterization of the complexes was performed by electrospray mass spectroscopy, ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, nuclear magnetic resonance, fluorescence spectroscopy, and thermal analysis. The complexes are electrolytes (1 : 1) having a molar ratio M : L ¼ 1 : 1, except 1, which is a nonelectrolyte with a molar ratio M : L ¼ 1 : 2. The fluorescence intensity of the complexes is more intense than uncomplexed uranyl, except 1 and 5. High fluorescence of the uranyl SalAla complex (2) was used to assess complexes-DNA interaction based on fluorescence quenching assay. The interaction of 2 with DNA was assessed by measuring the relative fluorescence quenching of the complex when nucleic acids were added.

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Section: Thermal Studiesmentioning

confidence: 99%

“…The most reported studies focus on U(VI) complexes with aminoacids based on L-glycine [14,15], L-cysteine [16], histidine [17], tyrosine [18], and tryptophan [19]. Heteroditopic chiral uranyl-salen can be used as receptor for molecular recognition of amino acid ammonium salts [20].…”

Section: Introductionmentioning

confidence: 99%