Results 21 to 30 of about 95,196 (268)

New Fluorescence Quenching Approach for Determination of Valsartan in Certain Tablets and Spiked Biological Fluids

ARO-The Scientific Journal of Koya University, 2020
A new, simple, selective, sensitive, fast, economical, and reliable fluorescence quenching method for the quantitation of valsartan was investigated using basic fuchsin act as a fluorometric dye.
Layth I. Abd Ali
doaj   +1 more source

Anthracene Fluorescence Quenching by a Tetrakis (Ketocarboxamide) Cavitand

Journal of Spectroscopy, 2014
Quenching of both fluorescence lifetime and fluorescence intensity of anthracene was investigated in the presence of a newly derived tetrakis (ketocarboxamide) cavitand at various concentrations.
Tibor Zoltan Janosi, Jouko Korppi-Tommola, Zsolt Csok, Laszlo Kollar, Pasi Myllyperkio, Janos Erostyak   +5 more
doaj   +1 more source

Tryptophan Fluorescence Quenching Assays for Measuring Protein-ligand Binding Affinities: Principles and a Practical Guide

Bio-Protocol, 2019
Tryptophan fluorescence quenching is a type of fluorescence spectroscopy used for binding assays. The assay relies on the ability to quench the intrinsic fluorescence of tryptophan residues within a protein that results from changes in the local ...
Anthony Yammine, Jinlong Gao, Ann Kwan
doaj   +1 more source

Fluorescence quenching by methylcytosine-metal complexation [PDF]

Nucleic Acids Symposium Series, 2006
We report the control of fluorescence emission from the fluorophore fixed on DNA using the methylcytosine-selective addition of an osmium(VI)-bipyridine complex. We synthesized the DNA modified by a microenvironment-sensitive fluorophore, 2-dimethylamino-6-acylnaphthalene.
Kazuo, Tanaka, Kazuki, Tainaka, Akimitsu, Okamoto   +2 more
openaire   +2 more sources

Validation of a Novel Strategy for Fluorescence Quenching for a Self-Quenching Fluorogenic Probe and Its Application for Visual Loop-Mediated Isothermal Amplification Detection During Food Safety Analysis

Foods
The self-quenching fluorogenic probe facilitates precise identification of LAMP (loop-mediated isothermal amplification) amplicons, unaffected by non-specific products resulting from primer dimers.
Sisi Huang, Shihui Wang, Tianlong Wang, Hongwei Song, Yan Guo, Xiong Xiong, Libin Wang   +6 more
doaj   +1 more source

Insight into the Interaction between the HIV-1 Integrase Inhibitor Elvitegravir and Bovine Serum Albumin: A Spectroscopic Study

Journal of Spectroscopy, 2015
The interaction between the anti-HIV drug Elvitegravir (EVG) and bovine serum albumin (BSA) was investigated by fluorescence spectroscopy and UV-visible absorption spectra. The mechanism for quenching the fluorescence of BSA by EVG is discussed.
Ali Saber Abdelhameed
doaj   +1 more source

Metal-Induced Fluorescence Quenching of Photoconvertible Fluorescent Protein DendFP

Molecules, 2022
Sensitive and accurate detection of specific metal ions is important for sensor development and can advance analytical science and support environmental and human medical examinations. Fluorescent proteins (FPs) can be quenched by specific metal ions and spectroscopically show a unique fluorescence-quenching sensitivity, suggesting their potential ...
In Jung Kim, Yongbin Xu, Ki Hyun Nam
openaire   +3 more sources

Synthesis of 5-Dialkyl(aryl)aminomethyl-8-hydroxyquinoline Dansylates as Selective Fluorescent Sensors for Fe3+

Molecules, 2007
A series of 5-dialkyl(aryl)aminomethyl-8-hydroxyquinoline dansylates were synthesized and their fluoroionophoric properties toward representative alkali ions, alkaline earth ions and transition metal ions were investigated.
Yaowu Sha, Feng Wang, Ruogu Peng
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source