[NMR paper] Linear discriminant analysis reveals hidden patterns in NMR chemical shifts of intrinsically disordered proteins
Linear discriminant analysis reveals hidden patterns in NMR chemical shifts of intrinsically disordered proteins
NMR spectroscopy is key in the study of intrinsically disordered proteins (IDPs). Yet, even the first step in such an analysis-the assignment of observed resonances to particular nuclei-is often problematic due to low peak dispersion in the spectra of IDPs. We show that the assignment process can be aided by finding "hidden" chemical shift patterns specific to the amino acid residue types. We find such patterns in the training data from the Biological Magnetic Resonance Bank...
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10-07-2022 08:36 AM
Comparative analysis of 13 C chemical shifts of β-sheet amyloid proteins and outer membrane proteins
Comparative analysis of 13 C chemical shifts of β-sheet amyloid proteins and outer membrane proteins
Abstract
Cross-β amyloid fibrils and membrane-bound β-barrels are two important classes of β-sheet proteins. To investigate whether there are systematic differences in the backbone and sidechain conformations of these two families of proteins, here we analyze the 13C chemical shifts of 17 amyloid proteins and 7 β-barrel membrane proteins whose high-resolution structures have been determined by NMR. These 24 proteins contain 373 β-sheet residues...
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04-13-2021 12:50 AM
[NMR paper] Cracking the allosteric code of NMR chemical shifts.
Cracking the allosteric code of NMR chemical shifts.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-custom-pnas_full_free.gif http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/https:--www.ncbi.nlm.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Cracking the allosteric code of NMR chemical shifts.
Proc Natl Acad Sci U S A. 2016 08 23;113(34):9407-9
Authors: VanSchouwen B, Melacini G
PMID: 27512035
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12-01-2017 09:24 PM
Allosteric code of NMR chemical shifts [Biophysics and Computational Biology]
Allosteric code of NMR chemical shifts
VanSchouwen, B., Melacini, G....
Date: 2016-08-23
One of the broadest definitions of allostery is in terms of long-range couplings between remote sites within a molecular system (1–4). Allosteric couplings are critical to understand the molecular basis of physiological regulatory mechanisms as well as of pathological deregulation (1–4). Allostery is also opening new opportunities in drug design... Read More
PNAS:
Number: 34
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08-24-2016 04:35 AM
[NMR paper] A Tool Set to Map Allosteric Networks through the NMR Chemical Shift Covariance Analysis.
A Tool Set to Map Allosteric Networks through the NMR Chemical Shift Covariance Analysis.
Related Articles A Tool Set to Map Allosteric Networks through the NMR Chemical Shift Covariance Analysis.
Sci Rep. 2014;4:7306
Authors: Boulton S, Akimoto M, Selvaratnam R, Bashiri A, Melacini G
Abstract
Allostery is an essential regulatory mechanism of biological function. Allosteric sites are also pharmacologically relevant as they are often targeted with higher selectivity than orthosteric sites. However, a comprehensive map of...
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12-09-2014 01:13 PM
[NMR paper] NMR mapping of protein conformational landscapes using coordinated behavior of chemical shifts upon ligand binding.
NMR mapping of protein conformational landscapes using coordinated behavior of chemical shifts upon ligand binding.
Related Articles NMR mapping of protein conformational landscapes using coordinated behavior of chemical shifts upon ligand binding.
Phys Chem Chem Phys. 2014 Mar 7;
Authors: Cembran A, Kim J, Gao J, Veglia G
Abstract
Proteins exist as an ensemble of conformers that are distributed on free energy landscapes resembling folding funnels. While the most stable conformers populate low energy basins, protein function is often...
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03-10-2014 10:35 AM
[NMR paper] Protein backbone and sidechain torsion angles predicted from NMR chemical shifts using artificial neural networks.
Protein backbone and sidechain torsion angles predicted from NMR chemical shifts using artificial neural networks.
Related Articles Protein backbone and sidechain torsion angles predicted from NMR chemical shifts using artificial neural networks.
J Biomol NMR. 2013 Jun 2;
Authors: Shen Y, Bax A
Abstract
A new program, TALOS-N, is introduced for predicting protein backbone torsion angles from NMR chemical shifts. The program relies far more extensively on the use of trained artificial neural networks than its predecessor, TALOS+....
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06-04-2013 06:31 PM
Analysis of and chemical shifts of cysteine and cystine residues in proteins: a quant
Abstract Cysteines possess a unique property among the 20 naturally occurring amino acids: it can be present in proteins in either the reduced or oxidized form, and can regulate the activity of some proteins. Consequently, to augment our previous treatment of the other types of residues, the
13\textC\upalpha and
13\textC\upbeta chemical shifts of 837 cysteines in disulfide-bonded cystine from a set of seven non-redundant proteins, determined by X-ray crystallography and NMR spectroscopy, were computed at the DFT level of theory. Our results indicate that the errors between observed...