Related ArticlesOn the reliability of NMR relaxation data analyses: A Markov Chain Monte Carlo approach.
J Magn Reson. 2014 Jul 26;246C:94-103
Authors: Abergel D, Volpato A, Coutant EP, Polimeno A
Abstract
The analysis of NMR relaxation data is revisited along the lines of a Bayesian approach. Using a Markov Chain Monte Carlo strategy of data fitting, we investigate conditions under which relaxation data can be effectively interpreted in terms of internal dynamics. The limitations to the extraction of kinetic parameters that characterize internal dynamics are analyzed, and we show that extracting characteristic time scales shorter than a few tens of ps is very unlikely. However, using MCMC methods, reliable estimates of the marginal probability distributions and estimators (average, standard deviations, etc.) can still be obtained for subsets of the model parameters. Thus, unlike more conventional strategies of data analysis, the method avoids a model selection process. In addition, it indicates what information may be extracted from the data, but also what cannot.
PMID: 25117152 [PubMed - as supplied by publisher]
[NMR paper] NMR Relaxation in Proteins with Fast Internal Motions and Slow Conformational Exchange: Model Free Framework and Markov State Simulations.
NMR Relaxation in Proteins with Fast Internal Motions and Slow Conformational Exchange: Model Free Framework and Markov State Simulations.
NMR Relaxation in Proteins with Fast Internal Motions and Slow Conformational Exchange: Model Free Framework and Markov State Simulations.
J Phys Chem B. 2013 May 2;
Authors: Xia J, Deng NJ, Levy RM
Abstract
Calculating NMR relaxation effects for proteins with dynamics on multiple timescales generally requires very long trajectories based on conventional molecular dynamics simulations. In this report,...
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A general Monte Carlo/simulated annealing algorithm for resonance assignment in NMR of uniformly labeled biopolymers
A general Monte Carlo/simulated annealing algorithm for resonance assignment in NMR of uniformly labeled biopolymers
Abstract We describe a general computational approach to site-specific resonance assignments in multidimensional NMR studies of uniformly 15N,13C-labeled biopolymers, based on a simple Monte Carlo/simulated annealing (MCSA) algorithm contained in the program MCASSIGN2. Input to MCASSIGN2 includes lists of multidimensional signals in the NMR spectra with their possible residue-type assignments (which need not be unique), the biopolymer sequence, and a table that describes...
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06-30-2011 05:01 AM
[NMRpipe Yahoo group] Re: Monte Carlo Error using modelXY
Re: Monte Carlo Error using modelXY
By default, the modelXY program reports an error range which accounts for 90% of the monte carlo trials (argument -cf 0.9). It may well be that the other
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[NMRpipe Yahoo group] Monte Carlo Error using modelXY
Monte Carlo Error using modelXY
Hello dear NMRPipe users, I'm using the modelXY program provided by NMRpipe to fit T1 relaxation curves. It seems to work fine but when I compare to the
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[NMR paper] Main chain and side chain dynamics of a heme protein: 15N and 2H NMR relaxation studi
Main chain and side chain dynamics of a heme protein: 15N and 2H NMR relaxation studies of R. capsulatus ferrocytochrome c2.
Related Articles Main chain and side chain dynamics of a heme protein: 15N and 2H NMR relaxation studies of R. capsulatus ferrocytochrome c2.
Biochemistry. 2001 Jun 5;40(22):6559-69
Authors: Flynn PF, Bieber Urbauer RJ, Zhang H, Lee AL, Wand AJ
A detailed characterization of the main chain and side chain dynamics in R. capsulatus ferrocytochrome c(2) derived from (2)H NMR relaxation of methyl group resonances is...
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11-19-2010 08:32 PM
[NMR paper] A simple approach to analyzing protein side-chain dynamics from 13C NMR relaxation da
A simple approach to analyzing protein side-chain dynamics from 13C NMR relaxation data.
Related Articles A simple approach to analyzing protein side-chain dynamics from 13C NMR relaxation data.
J Magn Reson. 1998 Feb;130(2):329-34
Authors: Daragan VA, Mayo KH
A simple approach to deriving motional dynamics information of protein and peptide side chains by using 13C NMR relaxation data is presented. By using linear approximation of internal rotational correlation functions, simple equations for relating side-chain conformation, bond rotational...
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11-17-2010 11:06 PM
Sequence specific resonance assignment via Multicanonical Monte Carlo search using an ABACUS approach
Sequence specific resonance assignment via Multicanonical Monte Carlo search using an ABACUS approach
Alexander Lemak, Carlos A. Steren, Cheryl H. Arrowsmith and Miguel Llinás
Journal of Biomolecular NMR; 2008; 41(1); pp 29 - 41
Abstract:
ABACUS is a novel protocol for automated protein structure determination via NMR. ABACUS starts from molecular fragments defined by unassigned J-coupled spin-systems and involves a Monte Carlo stochastic search in assignment space, probabilistic sequence selection, and assembly of fragments into structures that are used to guide the stochastic...
On the reliability of NMR relaxation data analyses: A Markov Chain Monte Carlo approach.
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