scholarly journals Topology-Selective, Fluorescent “Light-Up” Probes for G-Quadruplex DNA Based on Photoinduced Electron Transfer

2018 ◽  
Vol 24 (48) ◽  
pp. 12638-12651 ◽  
Author(s):  
Xiao Xie ◽  
Oksana Reznichenko ◽  
Ludovic Chaput ◽  
Pascal Martin ◽  
Marie-Paule Teulade-Fichou ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Fluorescent Light ◽  
Quadruplex Dna ◽  
G Quadruplex

A photoelectrochemical sensor through quenching of photoinduced electrons based on a G-quadruplex/hemin complex

2015 ◽  
Vol 7 (9) ◽  
pp. 3697-3700 ◽  
Author(s):  
Xiang Yan ◽  
Kewei Wang ◽  
Danping Xie ◽  
Lijun Xu ◽  
Qianqian Han ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Label Free ◽  
Withdrawal Effect ◽  
Photoelectrochemical Sensor ◽  
G Quadruplex ◽  
Electron Withdrawal

A novel label-free photoelectrochemical sensor was fabricated for the detection of K+ based on the electron withdrawal effect of hemin. The decreasing photocurrent from photoinduced electron transfer by a G-quadruplex/hemin complex was utilized.

scholarly journals DNA transistors switched by the Hofmeister effect

2019 ◽  
Author(s):  
Tanner G. Hoog ◽  
Matthew R. Pawlak ◽  
Lauren M. Aufdembrink ◽  
Benjamin R. Bachan ◽  
Matthew B. Galles ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electronic Device ◽  
Quadruplex Dna ◽  
Hofmeister Effect ◽  
State Switching ◽  
Signal Amplifier ◽  
G Quadruplex ◽  
Attractive Candidate ◽  
Perchlorate Concentration ◽  
The 1960S

AbstractWe are nearing the end of a remarkable period that began in the 1960s in which semiconductor manufacturers succeeded in shrinking die and feature sizes logarithmically, thus growing transistor counts exponentially with time. As we reach the theoretical physical limits of classical MOSFET semiconductors, DNA is a highly attractive candidate for future miniaturization of microprocessors. Here we show a foundational electronic device - a transistor - can be constructed from DNA. The nanodevice is comprised of two strands, one of which can be selectively switched between a G-quadruplex and duplex or single-stranded conformations. This switching ability arises from our discovery that perchlorate, a chaotropic Hofmeister ion, selectively destabilizes duplex over G-quadruplex DNA. By varying perchlorate concentration, we show that the device can be operated as a switch or signal amplifier. State switching can be achieved in three ways: thermally, by dilution, or by concentration. In each case, when operated in the presence of the cofactor hemin, the device catalyzes electron transfer in only the G-quadruplex state.

Flexible amine-functionalized triphenylamine derivative as a fluorescent “light-up” probe for G-quadruplex DNA

2017 ◽  
Vol 136 ◽  
pp. 78-84 ◽  
Author(s):  
Ming-Qi Wang ◽  
Shuo Liu ◽  
Cai-Ping Tang ◽  
Aun Raza ◽  
Shuo Li ◽  
...  
Keyword(s):  
Fluorescent Light ◽  
Quadruplex Dna ◽  
Amine Functionalized ◽  
G Quadruplex ◽  
Triphenylamine Derivative

A fluorescent signal-on sensor based on photoinduced electron transfer between copper nanoparticles and G-quadruplex/hemin

2019 ◽  
Vol 11 (18) ◽  
pp. 2410-2414
Author(s):  
Li Juan Ou ◽  
Si Wen Qin ◽  
Heng Bo ◽  
Jian Xin Luo ◽  
Ni Cui Yuan ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Copper Nanoparticles ◽  
Photoinduced Electron Transfer ◽  
Fluorescence Signal ◽  
Copper Nanoclusters ◽  
Fluorescent Signal ◽  
G Quadruplex

A novel fluorescence signal-on biosensing platform was developed by using photoinduced electron transfer (PET) between copper nanoclusters (CuNCs) and G-quadruplex/hemin.

Rational design of signal-on biosensors by using photoinduced electron transfer between Ag nanoclusters and split G-quadruplex halves–hemin complexes

2014 ◽  
Vol 50 (91) ◽  
pp. 14221-14224 ◽  
Author(s):  
Kai Zhang ◽  
Ke Wang ◽  
Xue Zhu ◽  
Yun Gao ◽  
Minhao Xie
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Rational Design ◽  
Sensing Platform ◽  
G Quadruplex ◽  
Ag Nanoclusters

Photoinduced electron transfer (PET) between DNA–Ag nanoclusters (AgNCs) and G-quadruplex halves–hemin has been used for building a new sensing platform for the signal-on detection of adenosine and RNA.

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