Publication date: Available online 6 September 2016 Source:Journal of Magnetic Resonance
Author(s): Zhengfeng Zhang, Yanke Chen, Jun Yang
We propose a robust band-selective heteronuclear 15N-13C recoupling method using dual back-to-back (BABA) pulses (DBP). It contains four 90° pulses in each rotor period and corresponding phase cycling on each channel (13C and 15N). DBP aims at rapid band-selective heteronuclear magnetization transfer between 15N and 13C?/13C’, whose efficiency is close to that of the well-known SPECIFIC CP in membrane proteins with relatively short relaxation time in rotating frame (T 1?). Compared to SPECIFIC CP, DBP is very simple to set up and highly robust to RF variations. Thus, it can reduce the efforts in experimental optimization, especially for low-sensitive samples, and is very suitable for long-time or quantitative experiments. The efficacy of DBP is demonstrated by the E. coli diacylglycerol kinase (DAGK) proteoliposome. We anticipate that DBP would be useful for (segments of) membrane proteins that undergo the ?s-ms timescale motions in magic-angle spinning (MAS) solid-state NMR. Graphical abstract
[NMR paper] Measuring translational diffusion coefficients of peptides and proteins by PFG-NMR using band-selective RF pulses.
Measuring translational diffusion coefficients of peptides and proteins by PFG-NMR using band-selective RF pulses.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--production.springer.de-OnlineResources-Logos-springerlink.gif Related Articles Measuring translational diffusion coefficients of peptides and proteins by PFG-NMR using band-selective RF pulses.
Eur Biophys J. 2014 May 14;
Authors: Yao S, Weber DK, Separovic F, Keizer DW
Abstract
Molecular translational self-diffusion, a measure of diffusive...
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05-16-2014 08:06 PM
W-band orientation selective DEER measurements on a Gd3+/nitroxide mixed-labeled protein dimer with a dual mode cavity
W-band orientation selective DEER measurements on a Gd3+/nitroxide mixed-labeled protein dimer with a dual mode cavity
Available online 12 December 2012
Publication year: 2012
Source:Journal of Magnetic Resonance</br>
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Double electron-electron resonance (DEER) at W-band (95 GHz) was applied to measure the distance between a pair of nitroxide and Gd3+ chelate spin labels, about 6 nm apart, in a homodimer of the protein ERp29. While high-field DEER measurements on systems with such mixed labels can be highly attractive in terms of sensitivity and the potential to...
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12-15-2012 09:51 AM
W-band orientation selective DEER measurements on a Gd3+/nitroxide mixed-labeled protein dimer with a dual mode cavity
W-band orientation selective DEER measurements on a Gd3+/nitroxide mixed-labeled protein dimer with a dual mode cavity
Available online 12 December 2012
Publication year: 2012
Source:Journal of Magnetic Resonance</br>
</br>
Double electron-electron resonance (DEER) at W-band (95 GHz) was applied to measure the distance between a pair of nitroxide and Gd3+ chelate spin labels, about 6 nm apart, in a homodimer of the protein ERp29. While high-field DEER measurements on systems with such mixed labels can be highly attractive in terms of sensitivity and the potential to...
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12-12-2012 08:21 PM
[NMRpipe Yahoo group] Re: 13C-NOESYHSQC and Back-prediction
Re: 13C-NOESYHSQC and Back-prediction
Hi All, Thanks for bringing this up, and sorry for any problems. As a work-around, I think "LP -before" will work better with root-fixing turned off using the
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04-02-2012 06:24 PM
Dual-band Selective Double Cross Polarization for Heteronuclear Polarization Transfer between Dilute Spins in Solid-State MAS NMR
Dual-band Selective Double Cross Polarization for Heteronuclear Polarization Transfer between Dilute Spins in Solid-State MAS NMR
Publication year: 2012
Source:Journal of Magnetic Resonance</br>
Zhengfeng Zhang, Yimin Miao, Xiaoli Liu, Jun Yang, Conggang Li, Feng Deng, Riqiang Fu</br>
A sinusoidal modulation scheme is described for selective heteronuclear polarization transfer between two dilute spins in double cross polarization magic-angle-spinning nuclear magnetic resonance spectroscopy. During the second N->C cross polarization, the 13C RF amplitude is...
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03-09-2012 09:16 AM
Dual-band Selective Double Cross Polarization for Heteronuclear Polarization Transfer between Dilute Spins in Solid-State MAS NMR
Dual-band Selective Double Cross Polarization for Heteronuclear Polarization Transfer between Dilute Spins in Solid-State MAS NMR
Publication year: 2012
Source: Journal of Magnetic Resonance, Available online 5 March 2012</br>
Zhengfeng*Zhang, Yimin*Miao, Xiaoli*Liu, Jun*Yang, Conggang*Li, ...</br>
A sinusoidal modulation scheme is described for selective heteronuclear polarization transfer between two dilute spins in double cross polarization magic-angle-spinning nuclear magnetic resonance spectroscopy. During the second N->C cross polarization, theC RF amplitude is modulated...
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03-06-2012 06:04 AM
[Ryan's blog] Back to Reality #1- LC/MS vs. NMR
Source: Ryan's blog
Back to Reality #1- LC/MS vs. NMR
Reality #1: LC/MS has become the primary analytical check for the medicinal chemist. I Love NMR, but it's the reality So how did we get here? Clearly there a lot of reasons, but one of my hypotheses is based on...
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06-10-2011 01:41 AM
[NMR analysis blog] Back in the blogosphere
Back in the blogosphere
After a 3 month-long hiatus, I'm back in the blogosphere. I’ve been travelling and working very hard on several exciting projects, but my entries have consequently suffered.
Although my workload has not decreased, I am not planning to travel for the next few weeks. Hopefully I will manage to blog on a more regular basis from now on, especially now that there are many things we have been working on lately that I hope will be of interest to the NMR community.
For now, I’d just like to point out a very interesting blog entry written by my friend Stan on his...