13C relaxation experiments for aromatic side chains employing longitudinal- and transverse-relaxation optimized NMR spectroscopy
13C relaxation experiments for aromatic side chains employing longitudinal- and transverse-relaxation optimized NMR spectroscopy
Abstract Aromatic side chains are prevalent in protein binding sites, perform functional roles in enzymatic catalysis, and form an integral part of the hydrophobic core of proteins. Thus, it is of great interest to probe the conformational dynamics of aromatic side chains and its response to biologically relevant events. Indeed, measurements of 13C relaxation rates in aromatic moieties have a long history in biomolecular NMR, primarily in the context of...
nmrlearner
Journal club
0
07-05-2012 04:13 AM
Quantitative comparison of errors in 15N transverse relaxation rates measured using various CPMG phasing schemes
Quantitative comparison of errors in 15N transverse relaxation rates measured using various CPMG phasing schemes
Abstract Nitrogen-15 Carr-Purcell-Meiboom-Gill (CPMG) transverse relaxation experiment are widely used to characterize protein backbone dynamics and chemical exchange parameters. Although an accurate value of the transverse relaxation rate, R2, is needed for accurate characterization of dynamics, the uncertainty in the R2 value depends on the experimental settings and the details of the data analysis itself. Here, we present an analysis of the impact of CPMG pulse phase...
nmrlearner
Journal club
0
04-03-2012 07:56 AM
Translational Diffusion of Macromolecular Assemblies Measured Using Transverse-Relaxation-Optimized Pulsed Field Gradient NMR
Translational Diffusion of Macromolecular Assemblies Measured Using Transverse-Relaxation-Optimized Pulsed Field Gradient NMR
Reto Horst, Arthur L. Horwich and Kurt Wu?thrich
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja206531c/aop/images/medium/ja-2011-06531c_0003.gif
Journal of the American Chemical Society
DOI: 10.1021/ja206531c
http://feeds.feedburner.com/~ff/acs/jacsat?d=yIl2AUoC8zA
http://feeds.feedburner.com/~r/acs/jacsat/~4/NWK45WCbths
nmrlearner
Journal club
0
09-26-2011 06:54 PM
Translational diffusion of macromolecular assemblies measured using transverse relaxation-optimized PFG-NMR.
Translational diffusion of macromolecular assemblies measured using transverse relaxation-optimized PFG-NMR.
Translational diffusion of macromolecular assemblies measured using transverse relaxation-optimized PFG-NMR.
J Am Chem Soc. 2011 Sep 16;
Authors: Horst R, Horwich AL, Wüthrich K
Abstract
ABSTRACT In structural biology, pulsed field gradient (PFG) NMR for characterization of size and hydrodynamic parameters of macromolecular solutes has the advantage over other techniques that the measurements can be recorded with identical solution...
nmrlearner
Journal club
0
09-17-2011 08:21 PM
[NMR paper] NMR spectroscopic characterization of millisecond protein folding by transverse relaxation dispersion measurements.
NMR spectroscopic characterization of millisecond protein folding by transverse relaxation dispersion measurements.
Related Articles NMR spectroscopic characterization of millisecond protein folding by transverse relaxation dispersion measurements.
J Am Chem Soc. 2005 Sep 28;127(38):13207-12
Authors: Zeeb M, Balbach J
The cold shock protein CspB adopts its native and functional tertiary structure on the millisecond time scale. We employed transverse relaxation NMR methods, which allow a quantitative measurement of the cooperativity of this...
nmrlearner
Journal club
0
12-01-2010 06:56 PM
[NMR paper] Transverse relaxation-optimized NMR spectroscopy with the outer membrane protein OmpX
Transverse relaxation-optimized NMR spectroscopy with the outer membrane protein OmpX in dihexanoyl phosphatidylcholine micelles.
Related Articles Transverse relaxation-optimized NMR spectroscopy with the outer membrane protein OmpX in dihexanoyl phosphatidylcholine micelles.
Proc Natl Acad Sci U S A. 2001 Feb 27;98(5):2358-63
Authors: Fernández C, Adeishvili K, Wüthrich K
The (2)H,(13)C,(15)N-labeled, 148-residue integral membrane protein OmpX from Escherichia coli was reconstituted with dihexanoyl phosphatidylcholine (DHPC) in mixed micelles...
nmrlearner
Journal club
0
11-19-2010 08:32 PM
[NMR paper] Ferritin effect on the transverse relaxation of water: NMR microscopy at 9.4 T.
Ferritin effect on the transverse relaxation of water: NMR microscopy at 9.4 T.
Related Articles Ferritin effect on the transverse relaxation of water: NMR microscopy at 9.4 T.
Magn Reson Med. 1996 Apr;35(4):514-20
Authors: Gottesfeld Z, Neeman M
Accumulation of ferritin, the iron storage protein, has been linked recently to aging and a number of pathologies. Noninvasive detection of iron storage by MRI relies on its extremely strong effect on water relaxation. The aim of this article is to characterize the effect of ferritin on transverse...
nmrlearner
Journal club
0
08-22-2010 02:27 PM
[NMR paper] Internal motions of apo-neocarzinostatin as studied by 13C NMR methine relaxation at
Internal motions of apo-neocarzinostatin as studied by 13C NMR methine relaxation at natural abundance.
Related Articles Internal motions of apo-neocarzinostatin as studied by 13C NMR methine relaxation at natural abundance.
J Biomol NMR. 1995 Apr;5(3):233-44
Authors: Mispelter J, Lefèvre C, Adjadj E, Quiniou E, Favaudon V
Dynamics of the backbone and some side chains of apo-neocarzinostatin, a 10.7 kDa carrier protein, have been studied from 13C relaxation rates R1, R2 and steady-state 13C-(1H) NOEs, measured at natural abundance. Relaxation...