StructureEnergy Relationships of Halogen Bonds in Proteins
StructureEnergy Relationships of Halogen Bonds in Proteins
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/bichaw/0/bichaw.ahead-of-print/acs.biochem.7b00022/20170407/images/medium/bi-2017-000223_0005.gif
Biochemistry
DOI: 10.1021/acs.biochem.7b00022
http://feeds.feedburner.com/~ff/acs/bichaw?d=yIl2AUoC8zA
http://feeds.feedburner.com/~r/acs/bichaw/~4/_lhMkMkq9Eg
More...
nmrlearner
Journal club
0
04-22-2017 10:30 PM
Asynchronous through-bond homonuclear isotropic mixing: application to carbonā??carbon transfer in perdeuterated proteins under MAS
Asynchronous through-bond homonuclear isotropic mixing: application to carbonā??carbon transfer in perdeuterated proteins under MAS
Abstract
Multiple-bond carbonā??carbon homonuclear mixing is a hurdle in extensively deuterated proteins and under fast MAS due to the absence of an effective proton dipolar-coupling network. Such conditions are now commonly employed in solid-state NMR spectroscopy. Here, we introduce an isotropic homonuclear 13Cā??13C through-bond mixing sequence, MOCCA, for the solid state. Even though applied under MAS, this scheme...
nmrlearner
Journal club
0
08-29-2015 09:18 PM
[NMR paper] Heteronuclear Transverse and Longitudinal Relaxation in AX4 Spin Systems: Application to 15N Relaxations in 15NH4+
Heteronuclear Transverse and Longitudinal Relaxation in AX4 Spin Systems: Application to 15N Relaxations in 15NH4+
Publication date: Available online 28 June 2014
Source:Journal of Magnetic Resonance</br>
Author(s): Nicolas D. Werbeck , D. Flemming Hansen</br>
The equations that describe the time-evolution of transverse and longitudinal 15N magnetisations in tetrahedral ammonium ions, 15NH4 +, are derived from the Bloch-Wangsness-Redfield density operator relaxation theory. It is assumed that the relaxation of the spin-states is dominated by (1) the intra-molecular...
nmrlearner
Journal club
0
06-29-2014 02:00 AM
[NMR paper] Proton-Detected Solid-State NMR Spectroscopy at Aliphatic Sites: Application to Crystalline Systems.
Proton-Detected Solid-State NMR Spectroscopy at Aliphatic Sites: Application to Crystalline Systems.
Related Articles Proton-Detected Solid-State NMR Spectroscopy at Aliphatic Sites: Application to Crystalline Systems.
Acc Chem Res. 2013 Jun 7;
Authors: Asami S, Reif B
Abstract
When applied to biomolecules, solid-state NMR suffers from low sensitivity and resolution. The major obstacle to applying proton detection in the solid state is the proton dipolar network, and deuteration can help avoid this problem. In the past, researchers...
nmrlearner
Journal club
0
06-12-2013 11:42 AM
[NMR900 blog] CSC 2013 symposium - "Halogen Bonding and other Non-Covalent Interactions"
CSC 2013 symposium - "Halogen Bonding and other Non-Covalent Interactions"
David Bryce (Ottawa) and Mark Taylor (Toronto) are organizing a symposium on "Halogen Bonding and other Non-Covalent Interactions" to be held as part of the Canadian Chemistry Conference in Quebec City, May 26-30, 2013. International experts including Prof. Pierangelo Metrangolo (Milan, Italy), Prof. Giuseppe Resnati (Milan, Italy), Prof. P. Shing Ho (Colorado State, USA), and Prof. Duncan Bruce (York, UK) have already agreed to give oral presentations at the meeting. Although this is not an NMR-focussed symposium,...
nmrlearner
News from NMR blogs
0
10-22-2012 09:07 PM
A 2D 13C-CEST experiment for studying slowly exchanging protein systems using methyl probes: an application to protein folding
A 2D 13C-CEST experiment for studying slowly exchanging protein systems using methyl probes: an application to protein folding
Abstract A 2D 13C Chemical Exchange Saturation Transfer (CEST) experiment is presented for studying slowly exchanging protein systems using methyl groups as probes. The utility of the method is first established through studies of protein L, a small protein, for which chemical exchange on the millisecond time-scale is not observed. Subsequently the approach is applied to a folding exchange reaction of a G48M mutant Fyn SH3 domain, for which only cross-peaks...
nmrlearner
Journal club
0
06-16-2012 06:01 AM
Improved accuracy in measuring one-bond and two-bond 15N,13CĪ± coupling constants in proteins by double-inphase/antiphase (DIPAP) spectroscopy
Improved accuracy in measuring one-bond and two-bond 15N,13CĪ± coupling constants in proteins by double-inphase/antiphase (DIPAP) spectroscopy
Abstract An extension to HN(CO-Ī±/Ī²-N,CĪ±-J)-TROSY (Permi and Annila in J Biomol NMR 16:221ā??227, 2000) is proposed that permits the simultaneous determination of the four coupling constants 1 J Nā?²(i)CĪ±(i), 2 J HN(i)CĪ±(i), 2 J CĪ±(iā??1)Nā?²(i), and 3 J CĪ±(iā??1)HN(i) in 15N,13C-labeled proteins. Contrasting the original scheme, in which two separate subspectra exhibit the 2 J CĪ±Nā?² coupling as inphase and antiphase splitting (IPAP), we...
nmrlearner
Journal club
0
06-10-2011 01:41 AM
Continuous-wave EPR at 275 GHz: Application to high-spin Fe3+ systems
Continuous-wave EPR at 275 GHz: Application to high-spin Fe3+ systems
Publication year: 2011
Source: Journal of Magnetic Resonance, In Press, Accepted Manuscript, Available online 11 March 2011</br>
G., Mathies , H., Blok , J.A.J.M., Disselhorst , P., Gast , H., van der Meer , ...</br>
The 275 GHz electron-paramagnetic-resonance spectrometer we reported on in 2004 has been equipped with a new probe head, which contains a cavity especially designed for operation in continuous-wave mode. The sensitivity and signal stability that is achieved with this new probe head is illustrated...
Application of the Halogen Bond in Protein Systems
Linear Mode
