scholarly journals A unified heteronuclear decoupling picture in solid-state NMR under low radio-frequency amplitude and fast magic-angle-spinning frequency regime

2019 ◽  
Vol 150 (14) ◽  
pp. 144201 ◽  
Author(s):  
Kshama Sharma ◽  
Asif Equbal ◽  
Niels Chr. Nielsen ◽  
P. K. Madhu
2007 ◽  
Vol 40 (25) ◽  
pp. 9018-9025 ◽  
Author(s):  
Xiaoliang Wang ◽  
Qiang Gu ◽  
Qing Sun ◽  
Dongshan Zhou ◽  
Pingchuan Sun ◽  
...  

2011 ◽  
Vol 208 (1) ◽  
pp. 44-48 ◽  
Author(s):  
Yusuke Nishiyama ◽  
Yuki Endo ◽  
Takahiro Nemoto ◽  
Hiroaki Utsumi ◽  
Kazuo Yamauchi ◽  
...  

2019 ◽  
Author(s):  
Dongyu Zhang ◽  
Boris Itin ◽  
Ann E. McDermott

AbstractSolid state NMR is a powerful tool to probe membrane protein structure and motions in native lipid structures. Sample heating, caused by magic angle spinning and radio frequency irradiation in solid state NMR, produces uncertainties in sample temperature and thermal broadening caused by temperature distributions, which can also lead to sample deterioration. To measure the sample temperature in real time, and to quantify thermal gradients and their dependence on radio frequency irradiation or spinning frequency, we use the chemical shift thermometer TmDOTP, a lanthanide complex. Compared to other NMR thermometers (e.g., the proton NMR signal of water), the proton spectrum of TmDOTP exhibits higher thermal sensitivity and resolution. In addition, the H6 proton in TmDOTP has a large chemical shift (−175 ppm at 275 K) and is well resolved from the rest of the proton spectrum. We identified two populations of TmDOTP, with differing temperatures and dependency on the radio frequency irradiation power, within proteoliposome samples. We interpret these populations as arising from the supernatant and the pellet, which is sedimented from the sample spinning. Our results indicate that TmDOTP is an excellent internal standard for monitoring temperatures of biophysically relevant samples without distorting their properties.


2010 ◽  
Vol 203 (1) ◽  
pp. 113-128 ◽  
Author(s):  
Qiang Wang ◽  
Bingwen Hu ◽  
Olivier Lafon ◽  
Julien Trébosc ◽  
Feng Deng ◽  
...  

Soft Matter ◽  
2011 ◽  
Vol 7 (2) ◽  
pp. 691-697 ◽  
Author(s):  
Qiang Gu ◽  
Xiaoliang Wang ◽  
Pingchuan Sun ◽  
Dongshan Zhou ◽  
Gi Xue

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