scholarly journals A simple fluorescent assay for cyromazine detection in raw milk by using CYR-stabilized G-quadruplex formation

RSC Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 2418-2425 ◽  
Author(s):  
Haibo Xing ◽  
Wenchao Gu ◽  
Dang Xu ◽  
Fuxiang Tian ◽  
Linyun Yao ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Raw Milk ◽  
Fluorescent Assay ◽  
G Quadruplex ◽  
Quadruplex Formation

A rapid biosensor for the detection of cyromazine in milk is reported based on a fluorescence quenching result.

A simple fluorescent assay for lead(ii) detection based on lead(ii)-stabilized G-quadruplex formation

RSC Advances ◽  
2013 ◽  
Vol 3 (38) ◽  
pp. 16962 ◽  
Author(s):  
Shenshan Zhan ◽  
Yuangen Wu ◽  
Le Liu ◽  
Haibo Xing ◽  
Lan He ◽  
...  
Keyword(s):  
Fluorescent Assay ◽  
G Quadruplex ◽  
Quadruplex Formation

A Rapid and Sensitive Aptasensor for Cyromazine Detection in Raw Milk Based on a Nanogold Probe and G-Quadruplex Formation

2019 ◽  
Vol 72 (7) ◽  
pp. 555
Author(s):  
Xu Dang ◽  
Wenchao Gu ◽  
Xiyin Zheng ◽  
Xuelian Fei ◽  
Fuxiang Tian ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Limit Of Detection ◽  
Raw Milk ◽  
Cationic Polymer ◽  
Remarkable Change ◽  
Detection Range ◽  
Naked Eye ◽  
Diallyldimethylammonium Chloride ◽  
G Quadruplex ◽  
Quadruplex Formation

Herein, a rapid, facile, and colourimetric sensor for the detection of cyromazine in raw milk is reported using an aptamer based on gold nanoparticles (AuNPs). A sequence-specific aptamer for cyromazine called Tcyr1 is designed to absorb on the surface of AuNPs and electrostatically interacts with poly(diallyldimethylammonium chloride) (PDDA), which prevents AuNPs from aggregating. It can also self-assemble to form a G-quadruplex-CYR complex with cyromazine. Because of its specificity and stability, the introduction of cyromazine in raw milk would influence the protection thus the following cationic polymer could aggregate AuNPs and cause a remarkable change in colour. According to this, the presence of cyromazine can be determined by the naked eye and means of absorbance. This sensor is selective for the detection of cyromazine in raw milk and has a limit of detection of 200 ppb by the naked eye and of 5.8 ppb by spectrophotometer, and has a detection range from 0.1 to 1 ppm.

scholarly journals DNA polymerase δ stalls on telomeric lagging strand templates independently from G-quadruplex formation

2013 ◽  
Vol 41 (22) ◽  
pp. 10323-10333 ◽  
Author(s):  
Justin D. Lormand ◽  
Noah Buncher ◽  
Connor T. Murphy ◽  
Parminder Kaur ◽  
Marietta Y. Lee ◽  
...  
Keyword(s):  
Dna Polymerase ◽  
Dna Polymerase Δ ◽  
G Quadruplex ◽  
Quadruplex Formation ◽  
Lagging Strand

scholarly journals TGF‐β‐induced fibrotic stress increases G‐quadruplex formation in human fibroblasts

FEBS Letters ◽  
2019 ◽  
Vol 593 (22) ◽  
pp. 3149-3161 ◽  
Author(s):  
Priyanka Toshniwal ◽  
Michelle Nguyen ◽  
Aurore Guédin ◽  
Helena Viola ◽  
Diwei Ho ◽  
...  
Keyword(s):  
Human Fibroblasts ◽  
G Quadruplex ◽  
Quadruplex Formation

Inhibition of Protein Synthesis Through RNA-Based Tandem G-Quadruplex Formation

2021 ◽  
Author(s):  
Masaki Hagihara
Keyword(s):  
Protein Synthesis ◽  
Reverse Transcriptase ◽  
Repeat Sequences ◽  
Guanine Quadruplex ◽  
G Quadruplex ◽  
Inhibition Of Protein Synthesis ◽  
Quadruplex Formation

Tandem guanine repeat sequences can adopt guanine quadruplex (G-quadruplex) structures and consecutive guanine repeat sequences can potentially afford multiple G-quadruplex structures. By using a reverse transcriptase stop assay and biophysical...

scholarly journals Structure and Stability of a Dimeric G-Quadruplex Formed by Cyclic Oligonucleotides

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Joan Casals ◽  
Júlia Viladoms ◽  
Enrique Pedroso ◽  
Carlos González
Keyword(s):  
Telomeric Repeat ◽  
High Melting ◽  
Structure And Stability ◽  
Dimeric Structure ◽  
Nmr Data ◽  
High Melting Temperature ◽  
Sodium Nmr ◽  
G Quadruplex ◽  
Global Topology ◽  
Quadruplex Formation

We have studied the structure and stability of the cyclic dodecamer d<pGGGTTAGGGTTA>, containing two copies of the human telomeric repeat. In the presence of sodium, NMR data are consistent with a dimeric structure of the molecule in which two cycles self-associate forming a quadruplex with three guanine tetrads connected by edgewise loops. The two macrocycles are arranged in a parallel way, and the dimeric structure exhibits a high melting temperature. These results indicate that cyclization of the phosphodiester chain does not prevent quadruplex formation, although it affects the global topology of the quadruplex.

scholarly journals Mutagenesis Reveals an Unusual Combination of Guanines in RNA G-Quadruplex Formation

ACS Omega ◽  
2017 ◽  
Vol 2 (8) ◽  
pp. 4790-4799
Author(s):  
Prachi Agarwala ◽  
Gargi Pal ◽  
Satyaprakash Pandey ◽  
Souvik Maiti
Keyword(s):  
G Quadruplex ◽  
Unusual Combination ◽  
Quadruplex Formation

scholarly journals A Minimal Sequence for Left‐Handed G‐Quadruplex Formation

2019 ◽  
Vol 58 (8) ◽  
pp. 2331-2335 ◽  
Author(s):  
Blaž Bakalar ◽  
Brahim Heddi ◽  
Emmanuelle Schmitt ◽  
Yves Mechulam ◽  
Anh Tuân Phan
Keyword(s):  
Left Handed ◽  
G Quadruplex ◽  
Quadruplex Formation ◽  
Minimal Sequence
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