Ratiometric Detection of Glutathione Based on Disulfide Linkage Rupture between a FRET Coumarin Donor and a Rhodamine Acceptor

ChemBioChem ◽  
2021 ◽  
Author(s):  
Yibin Zhang ◽  
Shuai Xia ◽  
Shulin Wan ◽  
Tessa E. Steenwinkel ◽  
Tara Vohs ◽  
...  
Keyword(s):  
Disulfide Linkage ◽  
Ratiometric Detection

Ultrasensitive ratiometric detection of Pb2+ using DNA tetrahedron-mediated hyperbranched hybridization chain reaction

2021 ◽  
Vol 1147 ◽  
pp. 170-177
Author(s):  
Pingping Ji ◽  
Guimei Han ◽  
Yan Huang ◽  
Hongxin Jiang ◽  
Qiwen Zhou ◽  
...  
Keyword(s):  
Hybridization Chain Reaction ◽  
Chain Reaction ◽  
Ratiometric Detection ◽  
Dna Tetrahedron

scholarly journals A hybrid upconversion nanoprobe for ratiometric detection of aliphatic biogenic amines in aqueous medium

2021 ◽  
Author(s):  
Shilpi Jaiswal ◽  
Subhankar Kundu ◽  
Sujoy Bandyopadhyay ◽  
Abhijit Patra
Keyword(s):  
Aqueous Medium ◽  
Biogenic Amines ◽  
Real Time ◽  
Inorganic Hybrid ◽  
The Real ◽  
Ratiometric Detection ◽  
Real Time Detection

An organic–inorganic hybrid upconversion nanoprobe was developed for the real-time detection of aliphatic biogenic amines in an aqueous medium, adulterated milk, and rotten fish.

scholarly journals A multicolor and ratiometric fluorescent sensing platform for metal ions based on arene–metal-ion contact

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Anna Kanegae ◽  
Yusuke Takata ◽  
Ippei Takashima ◽  
Shohei Uchinomiya ◽  
Ryosuke Kawagoe ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Near Infrared ◽  
Molecular Design ◽  
Theoretical Calculations ◽  
Probe Design ◽  
One Pot ◽  
Fluorescent Sensing ◽  
Sensing Platform ◽  
Ratiometric Detection

AbstractDespite continuous and active development of fluorescent metal-ion probes, their molecular design for ratiometric detection is restricted by the limited choice of available sensing mechanisms. Here we present a multicolor and ratiometric fluorescent sensing platform for metal ions based on the interaction between the metal ion and the aromatic ring of a fluorophore (arene–metal-ion, AM, coordination). Our molecular design provided the probes possessing a 1,9-bis(2′-pyridyl)-2,5,8-triazanonane as a flexible metal ion binding unit attached to a tricyclic fluorophore. This architecture allows to sense various metal ions, such as Zn(II), Cu(II), Cd(II), Ag(I), and Hg(II) with emission red-shifts. We showed that this probe design is applicable to a series of tricyclic fluorophores, which allow ratiometric detection of the metal ions from the blue to the near-infrared wavelengths. X-ray crystallography and theoretical calculations indicate that the coordinated metal ion has van der Waals contact with the fluorophore, perturbing the dye’s electronic structure and ring conformation to induce the emission red-shift. A set of the probes was useful for the differential sensing of eight metal ions in a one-pot single titration via principal component analysis. We also demonstrate that a xanthene fluorophore is applicable to the ratiometric imaging of metal ions under live-cell conditions.

scholarly journals ESIPT-based fluorescence probe for the ratiometric detection of superoxide

2019 ◽  
Vol 43 (7) ◽  
pp. 2875-2877 ◽  
Author(s):  
Luling Wu ◽  
Liyuan Liu ◽  
Hai-Hao Han ◽  
Xue Tian ◽  
Maria L. Odyniec ◽  
...  
Keyword(s):  
Fluorescence Probe ◽  
Ratiometric Detection

A simple ESIPT-based fluorescence probe (HMBT-LW) was developed for the detection of superoxide (O2˙−).

Ratiometric detection of heavy metal ions using fluorescent carbon dots

2019 ◽  
Vol 6 (4) ◽  
pp. 1121-1130 ◽  
Author(s):  
Francisco Yarur ◽  
Jun-Ray Macairan ◽  
Rafik Naccache
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Carbon Dots ◽  
Heavy Metal Ions ◽  
Ratiometric Detection ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Classical methods for the detection of heavy metal ions in water are tedious and time consuming.

Novel diaminomaleonitrile-based fluorescent probe for ratiometric detection and bioimaging of hypochlorite

2018 ◽  
Vol 265 ◽  
pp. 365-370 ◽  
Author(s):  
Yuliang Jiang ◽  
Shishan Wu ◽  
Can Jin ◽  
Bingxiang Wang ◽  
Jian Shen
Keyword(s):  
Fluorescent Probe ◽  
Ratiometric Detection

scholarly journals Gonococcal pili. Primary structure and receptor binding domain.

1984 ◽  
Vol 159 (5) ◽  
pp. 1351-1370 ◽  
Author(s):  
G K Schoolnik ◽  
R Fernandez ◽  
J Y Tai ◽  
J Rothbard ◽  
E C Gotschlich
Keyword(s):  
Amino Acids ◽  
Receptor Binding ◽  
Binding Domain ◽  
Structural Basis ◽  
Receptor Binding Domain ◽  
Variable Regions ◽  
Disulfide Linkage ◽  
Polymeric Structure ◽  
Antigenic Diversity ◽  
Single Polypeptide Chain

The complete amino acid sequence of pilin from gonococcal strain MS11 and the sequence of constant and variable regions from strain R10 pilin have been determined in order to elucidate the structural basis for adherence function, antigenic diversity, and polymeric structure. The MS11 pilin sequence consists of 159 amino acids in a single polypeptide chain with two cysteines in disulfide linkage and serine-bonded phosphate residues. TC-2 (31-111), a soluble monomeric pilus peptide prepared by arginine-specific digestion, bound human endocervical, but not buccal or HeLa cells and therefore is postulated to encompass the receptor binding domain. Variable regions of CNBr-3 appear to confer antigenic diversity and comprise segments in which changes in the position of charged residues occur in hydrophilic, beta-turns. Residues 2-21 and 202-221 of gonococcal pilins and lower eucaryotic actins, respectively, exhibit 50% homology. When these residues are arranged at intervals of 100 degrees of arc on "helical wheels," the identical amino acids comprise a hydrophobic face on one side of the helix. This observation, the hydrophobic character of this region and the tendency for TC-1 (residues 1-30) to aggregate in water, suggest that this stretch interacts with other subunits to stabilize polymeric structure.

Assigning Peptide Disulfide Linkage Pattern Among Regio-Isomers via Methoxy Addition to Disulfide and Tandem Mass Spectrometry

2017 ◽  
Vol 28 (6) ◽  
pp. 1099-1108 ◽  
Author(s):  
Kirt L. Durand ◽  
Lei Tan ◽  
Craig A. Stinson ◽  
Chasity B. Love-Nkansah ◽  
Xiaoxiao Ma ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Tandem Mass ◽  
Disulfide Linkage ◽  
Linkage Pattern
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