Journal Highlight: NMR quadrupole liouvillians for arbitrary spin: Exact symbolic expressions and perturbation solutions
Journal Highlight: NMR quadrupole liouvillians for arbitrary spin: Exact symbolic expressions and perturbation solutions
http://www.spectroscopynow.com/common/images/thumbnails/13dc0c363d3.jpgThe NMR of quadrupolar nuclei with half-integer spins, which is described by treating the quadrupole interaction with second-order perturbation theory, has been elaborated on by calculating the transitions directly without the requirement of knowing the operators and wavefunctions.
Read the rest at Spectroscopynow.com
nmrlearner
General
0
04-01-2013 04:23 PM
Automated protein backbone assignment using the projection-decomposition approach
Automated protein backbone assignment using the projection-decomposition approach
Abstract Spectral projection experiments by NMR in conjunction with decomposition analysis have been previously introduced for the backbone assignment of proteins; various pulse sequences as well as the behaviour with low signal-to-noise or chemical shift degeneracy have been illustrated. As a guide for routine applications of this combined tool, we provide here a systematic analysis on different types of proteins using welldefined run-time parameters. As a second result of this study, the backbone...
nmrlearner
Journal club
0
07-20-2012 11:13 PM
Binding site identification and structure determination of protein-ligand complexes by NMR a semiautomated approach.
Binding site identification and structure determination of protein-ligand complexes by NMR a semiautomated approach.
Binding site identification and structure determination of protein-ligand complexes by NMR a semiautomated approach.
Methods Enzymol. 2011;493:241-75
Authors: Ziarek JJ, Peterson FC, Lytle BL, Volkman BF
Over the last 15years, the role of NMR spectroscopy in the lead identification and optimization stages of pharmaceutical drug discovery has steadily increased. NMR occupies a unique niche in the biophysical analysis of drug-like...
nmrlearner
Journal club
0
03-05-2011 01:02 PM
Fast methionine-based solution structure determination of calcium-calmodulin complexes
Fast methionine-based solution structure determination of calcium-calmodulin complexes
Abstract Here we present a novel NMR method for the structure determination of calcium-calmodulin (Ca2+-CaM)-peptide complexes from a limited set of experimental restraints. A comparison of solved CaM-peptide structures reveals invariability in CaMâ??s backbone conformation and a structural plasticity in CaMâ??s domain orientation enabled by a flexible linker. Knowing this, the collection and analysis of an extensive set of NOESY spectra is redundant. Although RDCs can define CaM domain orientation in...
nmrlearner
Journal club
0
03-03-2011 02:06 AM
High-resolution protein structure determination starting with a global fold calculated from exact solutions to the RDC equations
High-resolution protein structure determination starting with a global fold calculated from exact solutions to the RDC equations
Abstract We present a novel structure determination approach that exploits the global orientational restraints from RDCs to resolve ambiguous NOE assignments. Unlike traditional approaches that bootstrap the initial fold from ambiguous NOE assignments, we start by using RDCs to compute accurate secondary structure element (SSE) backbones at the beginning of structure calculation. Our structure determination package, called rdc-Panda (RDC-based SSE PAcking with...
nmrlearner
Journal club
0
01-09-2011 12:46 PM
[NMR paper] An algebraic geometry approach to protein structure determination from NMR data.
An algebraic geometry approach to protein structure determination from NMR data.
Related Articles An algebraic geometry approach to protein structure determination from NMR data.
Proc IEEE Comput Syst Bioinform Conf. 2005;:235-46
Authors: Wang L, Mettu RR, Donald BR
Our paper describes the first provably-efficient algorithm for determining protein structures de novo, solely from experimental data. We show how the global nature of a certain kind of NMR data provides quantifiable complexity-theoretic benefits, allowing us to classify our...
nmrlearner
Journal club
0
11-24-2010 11:14 PM
[NMR paper] An approach for high-throughput structure determination of proteins by NMR spectrosco
An approach for high-throughput structure determination of proteins by NMR spectroscopy.
Related Articles An approach for high-throughput structure determination of proteins by NMR spectroscopy.
J Biomol NMR. 2000 Nov;18(3):229-38
Authors: Medek A, Olejniczak ET, Meadows RP, Fesik SW
An approach is described for rapidly determining protein structures by NMR that utilizes proteins containing 13C-methyl labeled Val, Leu, and Ile (delta1) and protonated Phe and Tyr in a deuterated background. Using this strategy, the key NOEs that define the...
nmrlearner
Journal club
0
11-19-2010 08:29 PM
[NMR paper] Analysis of the backbone dynamics of interleukin-1 beta using two-dimensional inverse
Analysis of the backbone dynamics of interleukin-1 beta using two-dimensional inverse detected heteronuclear 15N-1H NMR spectroscopy.
Related Articles Analysis of the backbone dynamics of interleukin-1 beta using two-dimensional inverse detected heteronuclear 15N-1H NMR spectroscopy.
Biochemistry. 1990 Aug 14;29(32):7387-401
Authors: Clore GM, Driscoll PC, Wingfield PT, Gronenborn AM
The backbone dynamics of uniformly 15N-labeled interleukin-1 beta are investigated by using two-dimensional inverse detected heteronuclear 15N-1H NMR...