A new mitochondria-targeted fluorescent probe HCy-D, constructed by dansyl and hemicyanine fluorophores, for SO2 derivatives (HSO3(-)/SO3(2-)) was presented. This probe was designed based on a new FRET platform. HCy-D showed a ratiometric, sensitive and rapid response to HSO3(-)/SO3(2-). Importantly, HCy-D was successfully used for fluorescence imaging of endogenous bisulfite in HepG2 cells, wh...

A dansyl derivative (Ds-DAB) was prepared and used as a fluorescent probe for peroxynitrite (ONOO(-)) detection. The results showed that the addition of peroxynitrite to the aqueous solution of Ds-DAB would result in obvious fluorescence enhancement. This probe is highly specific for peroxynitrite in aqueous solution, avoiding interference from other reactive oxygen species (ROS) and nitrogen s...

A fluorescent sensor for Hg2+ was obtained by incorporation of two methionine units into a cholate hexamer and by attaching a Dansyl group at the chain end. Folding could be made highly favorable or unfavorable in different solvents. Because folding was required to bring the sulfur groups together to chelate the mercury ion, binding affinity of the foldamer and, thus, its sensitivity as a senso...

Introduction of a fluorescence chromaphore into bifunctional crosslinkers is designed to assign two different functions. Normal crosslinker properties together with a fluorescence signal for quantification. As an example of this type of fluorescent-labeled crosslinker, dansyl-labeled heterobifunctional crosslinker with an NHS ester and sulfhydryl group was synthesized. The application of the sy...

The tryptic peptide containing the active-site cysteine in glyceraldehyde-3-phosphate dehydrogenase from Bacillus stearothermophilus 1503 was isolated after inhibition of the enzyme with (14)C-iodoacetate. The amino acid sequence of the 20-residue peptide was determined by 19 successive cycles of dansyl-Edman degradation. The sequence shows considerable homology with its counterparts from mesop...

conclusions the results of this study supported the potential protective effects of zncl2 on rat kidney tissues against cdcl2 toxicity. results in contrast to the animals that received zncl2, cdcl2 induced a dose-dependent elevation in bun, creatinine, and mda in those without zncl2 pretreatment. zinc chloride had significantly decreased all biochemical parameters and protected kidney cells aga...