Pulling Genetic RNA out of Tobacco Mosaic Virus Using Single-Molecule Force Spectroscopy

2010 ◽  
Vol 132 (32) ◽  
pp. 11036-11038 ◽  
Author(s):  
Ningning Liu ◽  
Bo Peng ◽  
Yuan Lin ◽  
Zhaohui Su ◽  
Zhongwei Niu ◽  
...  
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Single Molecule ◽  
Force Spectroscopy ◽  
Single Molecule Force Spectroscopy

scholarly journals Single-Molecule Force Spectroscopy Study on the Mechanism of RNA Disassembly in Tobacco Mosaic Virus

2013 ◽  
Vol 105 (12) ◽  
pp. 2790-2800 ◽  
Author(s):  
Ningning Liu ◽  
Ying Chen ◽  
Bo Peng ◽  
Yuan Lin ◽  
Qian Wang ◽  
...  
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Single Molecule ◽  
Force Spectroscopy ◽  
Spectroscopy Study ◽  
Single Molecule Force Spectroscopy

Nitroxyl Modified Tobacco Mosaic Virus as a Metal-Free High-Relaxivity MRI and EPR Active Superoxide Sensor

2018 ◽  
Author(s):  
Madushani Dharmarwardana ◽  
André F. Martins ◽  
Zhuo Chen ◽  
Philip M. Palacios ◽  
Chance M. Nowak ◽  
...  
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Single Molecule ◽  
Biological Fluids ◽  
Cellular Respiration ◽  
Organic Radical ◽  
Paramagnetic Resonance ◽  
Metal Free ◽  
Disease States

Superoxide overproduction is known to occur in multiple disease states requiring critical care yet non-invasive detection of superoxide in deep tissue remains a challenge. Herein, we report a metal-free magnetic resonance imaging (MRI) and electron paramagnetic resonance (EPR) active contrast agent prepared by “click conjugating” paramagnetic organic radical contrast agents (ORCAs) to the surface of tobacco mosaic virus (TMV). While ORCAs are known to be reduced <i>in vivo</i> to an MRI/EPR silent state, their oxidation is facilitated specifically by reactive oxygen species—in particular superoxide—and are largely unaffected by peroxides and molecular oxygen. Unfortunately, single molecule ORCAs typically offer weak MRI contrast. In contrast, our data confirm that the macromolecular ORCA-TMV conjugates show marked enhancement for <i>T<sub>1</sub></i> contrast at low field (<3.0 T), and <i>T<sub>2</sub></i> contrast at high field (9.4 T). Additionally, we demonstrated that the unique topology of TMV allows for “quenchless fluorescent” bimodal probe for concurrent fluorescence and MRI/EPR imaging, which was made possible by exploiting the unique inner and outer surface of the TMV nanoparticle. <a>Finally, we show TMV-ORCAs do not respond to normal cellular respiration, minimizing the likelihood for background, yet still respond to enzymatically produced superoxide in complicated biological fluids like serum.</a>

scholarly journals Single Molecule Force Spectroscopy of Siloxanes

2021 ◽  
Vol 714 (3) ◽  
pp. 032023
Author(s):  
Ling Chen ◽  
Liya Yang ◽  
Chunxia Wang ◽  
Ting Zhu
Keyword(s):  
Single Molecule ◽  
Force Spectroscopy ◽  
Single Molecule Force Spectroscopy

The Nature of the Force-Induced Conformation Transition of dsDNA Studied by Using Single Molecule Force Spectroscopy

Langmuir ◽  
2010 ◽  
Vol 26 (12) ◽  
pp. 9491-9496 ◽  
Author(s):  
Ningning Liu ◽  
Tianjia Bu ◽  
Yu Song ◽  
Wei Zhang ◽  
Jinjing Li ◽  
...  
Keyword(s):  
Single Molecule ◽  
Force Spectroscopy ◽  
Single Molecule Force Spectroscopy ◽  
Conformation Transition

Peptide Desorption Kinetics from Single Molecule Force Spectroscopy Studies

2014 ◽  
Vol 136 (2) ◽  
pp. 688-697 ◽  
Author(s):  
Stefanie Krysiak ◽  
Susanne Liese ◽  
Roland R. Netz ◽  
Thorsten Hugel
Keyword(s):  
Single Molecule ◽  
Force Spectroscopy ◽  
Desorption Kinetics ◽  
Single Molecule Force Spectroscopy ◽  
Spectroscopy Studies

scholarly journals Quantifying DNA melting transitions using single-molecule force spectroscopy

2008 ◽  
Vol 21 (3) ◽  
pp. 034114 ◽  
Author(s):  
Christopher P Calderon ◽  
Wei-Hung Chen ◽  
Kuan-Jiuh Lin ◽  
Nolan C Harris ◽  
Ching-Hwa Kiang
Keyword(s):  
Single Molecule ◽  
Force Spectroscopy ◽  
Dna Melting ◽  
Single Molecule Force Spectroscopy ◽  
Melting Transitions
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