journal
MENU ▼
Read by QxMD icon Read
search

Progress in Nuclear Magnetic Resonance Spectroscopy

journal
https://www.readbyqxmd.com/read/27888841/nmr-in-drug-discovery-a-practical-guide-to-identification-and-validation-of-ligands-interacting-with-biological-macromolecules
#1
REVIEW
Alvar D Gossert, Wolfgang Jahnke
Protein-ligand interactions are at the heart of drug discovery research. NMR spectroscopy is an excellent technology to identify and validate protein-ligand interactions. A plethora of NMR methods are available which are powerful, robust and information-rich, but also have pitfalls and limitations. In this review, we will focus on how to choose between different experiments, and assess their strengths and liabilities. We introduce the concept of the validation cross, which helps to categorize experiments according to their information content and to simplify the choice of the right experiment in order to address a specific question...
November 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27888840/nmr-solution-structure-determination-of-large-rna-protein-complexes
#2
REVIEW
Deepak Kumar Yadav, Peter J Lukavsky
Structure determination of RNA-protein complexes is essential for our understanding of the multiple layers of RNA-mediated posttranscriptional regulation of gene expression. Over the past 20years, NMR spectroscopy became a key tool for structural studies of RNA-protein interactions. Here, we review the progress being made in NMR structure determination of large ribonucleoprotein assemblies. We discuss approaches for the design of RNA-protein complexes for NMR structural studies, established and emerging isotope and segmental labeling schemes suitable for large RNPs and how to gain distance restraints from NOEs, PREs and EPR and orientational information from RDCs and SAXS/SANS in such systems...
November 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27888839/detection-of-intermolecular-noe-interactions-in-large-protein-complexes
#3
REVIEW
Jacob Anglister, Gautam Srivastava, Fred Naider
Intermolecular NOE interactions are invaluable for structure determination of biomolecular complexes by NMR and they represent the "gold-standard" amongst NMR measurements for characterizing interfaces. These NOEs constitute only a small fraction of the observed NOEs in a complex and are usually weaker than many of the intramolecular NOEs. A number of methods have been developed to remove the intramolecular NOEs that interfere with the identification of intermolecular NOEs. NMR experiments used to observe intermolecular NOE interactions in large protein complexes must cope with the short T2 relaxation time of the protons and heteronuclei in these complexes because they result in severe losses in sensitivity...
November 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27888838/five-decades-of-homonuclear-dipolar-decoupling-in-solid-state-nmr-status-and-outlook
#4
REVIEW
Kaustubh R Mote, Vipin Agarwal, P K Madhu
It has been slightly more than fifty years since the first homonuclear spin decoupling scheme, Lee-Goldburg decoupling, was proposed for removing homonuclear dipolar interactions in solid-state nuclear magnetic resonance. A family of such schemes has made observation of high-resolution NMR spectra of abundant spins possible in various applications in solid state. This review outlines the strategies used in this field and the future prospects of homonuclear spin decoupling in solid-state NMR.
November 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27573183/stable-isotope-labeling-methods-for-dna
#5
REVIEW
Frank H T Nelissen, Marco Tessari, Sybren S Wijmenga, Hans A Heus
NMR is a powerful method for studying proteins and nucleic acids in solution. The study of nucleic acids by NMR is far more challenging than for proteins, which is mainly due to the limited number of building blocks and unfavorable spectral properties. For NMR studies of DNA molecules, (site specific) isotope enrichment is required to facilitate specific NMR experiments and applications. Here, we provide a comprehensive review of isotope-labeling strategies for obtaining stable isotope labeled DNA as well as specifically stable isotope labeled building blocks required for enzymatic DNA synthesis...
August 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27573182/conformational-analysis-of-small-molecules-nmr-and-quantum-mechanics-calculations
#6
REVIEW
Cláudio F Tormena
This review deals with conformational analysis in small organic molecules, and describes the stereoelectronic interactions responsible for conformational stability. Conformational analysis is usually performed using NMR spectroscopy through measurement of coupling constants at room or low temperature in different solvents to determine the populations of conformers in solution. Quantum mechanical calculations are used to address the interactions responsible for conformer stability. The conformational analysis of a large number of small molecules is described, using coupling constant measurements in different solvents and at low temperature, as well as recent applications of through-space and through-hydrogen bond coupling constants JFH as tools for the conformational analysis of fluorinated molecules...
August 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27573181/assessment-of-dietary-exposure-and-effect-in-humans-the-role-of-nmr
#7
REVIEW
John P M van Duynhoven, Doris M Jacobs
In human nutritional science progress has always depended strongly on analytical measurements for establishing relationships between diet and health. This field has undergone significant changes as a result of the development of NMR and mass spectrometry methods for large scale detection, identification and quantification of metabolites in body fluids. This has allowed systematic studies of the metabolic fingerprints that biological processes leave behind, and has become the research field of metabolomics. As a metabolic profiling technique, NMR is at its best when its unbiased nature, linearity and reproducibility are exploited in well-controlled nutritional intervention and cross-sectional population screening studies...
August 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27573180/quantitative-analysis-of-protein-ligand-interactions-by-nmr
#8
REVIEW
Ayako Furukawa, Tsuyoshi Konuma, Saeko Yanaka, Kenji Sugase
Protein-ligand interactions have been commonly studied through static structures of the protein-ligand complex. Recently, however, there has been increasing interest in investigating the dynamics of protein-ligand interactions both for fundamental understanding of the underlying mechanisms and for drug development. NMR is a versatile and powerful tool, especially because it provides site-specific quantitative information. NMR has widely been used to determine the dissociation constant (KD), in particular, for relatively weak interactions...
August 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27110043/studying-dynamics-by-magic-angle-spinning-solid-state-nmr-spectroscopy-principles-and-applications-to-biomolecules
#9
Paul Schanda, Matthias Ernst
Magic-angle spinning solid-state NMR spectroscopy is an important technique to study molecular structure, dynamics and interactions, and is rapidly gaining importance in biomolecular sciences. Here we provide an overview of experimental approaches to study molecular dynamics by MAS solid-state NMR, with an emphasis on the underlying theoretical concepts and differences of MAS solid-state NMR compared to solution-state NMR. The theoretical foundations of nuclear spin relaxation are revisited, focusing on the particularities of spin relaxation in solid samples under magic-angle spinning...
August 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27247287/fifty-years-of-progress-in-nmr-spectroscopy-an-editorial-from-the-present-editorial-board
#10
EDITORIAL
David Neuhaus, Geoffrey Bodenhausen, David Gadian, Beat Meier, Gareth Morris
No abstract text is available yet for this article.
May 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27247286/fifty-years-of-progress-in-nmr-spectroscopy-an-editorial-from-the-founding-editors
#11
EDITORIAL
Jim Emsley, Jim Feeney
No abstract text is available yet for this article.
May 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27247285/-pulse-pair-technique-in-high-resolution-nmr-a-reprint-of-the-historical-1971-lecture-notes-on-two-dimensional-spectroscopy
#12
REVIEW
Jean Jeener, Gerrit Alewaeters
The review articles published in "Progress in NMR Spectroscopy" are usually invited treatments of topics of current interest, but occasionally the Editorial Board may take an initiative to publish important historical material that is not widely available. The present article represents just such a case. Jean Jeener gave a lecture in 1971 at a summer school in Basko Polje, in what was then called Yugoslavia. As is now widely known, Jean Jeener laid down the foundations in that lecture of two - and higher - dimensional NMR spectroscopy by proposing the homonuclear COSY experiment...
May 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27247284/deuterium-nmr-investigations-of-field-induced-director-alignment-in-nematic-liquid-crystals
#13
REVIEW
Akihiko Sugimura, Geoffrey R Luckhurst
There have been many investigations of the alignment of nematic liquid crystals by either a magnetic and/or an electric field. The basic features of the important hydrodynamic processes for low molar mass nematics have been characterized for the systems in their equilibrium and non-equilibrium states. These have been created using electric and magnetic fields to align the director and deuterium nuclear magnetic resonance ((2)H NMR) spectroscopy has been used to explore this alignment. Theoretical models based on continuum theory have been developed to complement the experiments and found to describe successfully the static and the dynamic phenomena observed...
May 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27247283/recent-advances-in-application-of-27-al-nmr-spectroscopy-to-materials-science
#14
REVIEW
Mohamed Haouas, Francis Taulelle, Charlotte Martineau
Valuable information about the local environment of the aluminum nucleus can be obtained through (27)Al Nuclear Magnetic Resonance (NMR) parameters like the isotropic chemical shift, scalar and quadrupolar coupling constants, and relaxation rate. With nearly 250 scientific articles per year dealing with (27)Al NMR spectroscopy, this analytical tool has become popular because of the recent progress that has made the acquisition and interpretation of the NMR data much easier. The application of (27)Al NMR techniques to various classes of compounds, either in solution or solid-state, has been shown to be extremely informative concerning local structure and chemistry of aluminum in its various environments...
May 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/27247282/diffusion-nmr-studies-of-macromolecular-complex-formation-crowding-and-confinement-in-soft-materials
#15
REVIEW
Suliman Barhoum, Swomitra Palit, Anand Yethiraj
Label-free methods to obtain hydrodynamic size from diffusion measurements are desirable in environments that contain multiple macromolecular species at a high total concentration: one example is the crowded cellular environment. In complex, multi-species macromolecular environments - in this article, we feature aqueous systems involving polymers, surfactants and proteins - the link between dynamics and size is harder to unpack due to macromolecular crowding and confinement. In this review, we demonstrate that the pulsed-field gradient NMR technique, with its spectral separation of different chemical components, is ideal for studying the dynamics of the entire system simultaneously and without labelling, in a wide range of systems...
May 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/26952192/how-to-tackle-protein-structural-data-from-solution-and-solid-state-an-integrated-approach
#16
REVIEW
Azzurra Carlon, Enrico Ravera, Witold Andrałojć, Giacomo Parigi, Garib N Murshudov, Claudio Luchinat
Long-range NMR restraints, such as diamagnetic residual dipolar couplings and paramagnetic data, can be used to determine 3D structures of macromolecules. They are also used to monitor, and potentially to improve, the accuracy of a macromolecular structure in solution by validating or "correcting" a crystal model. Since crystal structures suffer from crystal packing forces they may not be accurate models for the macromolecular structures in solution. However, the presence of real differences should be tested for by simultaneous refinement of the structure using both crystal and solution NMR data...
February 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/26952191/applications-of-nmr-spectroscopy-to-systems-biochemistry
#17
REVIEW
Teresa W-M Fan, Andrew N Lane
The past decades of advancements in NMR have made it a very powerful tool for metabolic research. Despite its limitations in sensitivity relative to mass spectrometric techniques, NMR has a number of unparalleled advantages for metabolic studies, most notably the rigor and versatility in structure elucidation, isotope-filtered selection of molecules, and analysis of positional isotopomer distributions in complex mixtures afforded by multinuclear and multidimensional experiments. In addition, NMR has the capacity for spatially selective in vivo imaging and dynamical analysis of metabolism in tissues of living organisms...
February 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/26952190/using-nmr-spectroscopy-to-elucidate-the-role-of-molecular-motions-in-enzyme-function
#18
REVIEW
George P Lisi, J Patrick Loria
Conformational motions play an essential role in enzyme function, often facilitating the formation of enzyme-substrate complexes and/or product release. Although considerable debate remains regarding the role of molecular motions in the conversion of enzymatic substrates to products, numerous examples have found motions to be crucial for optimization of enzyme scaffolds, effective substrate binding, and product dissociation. Conformational fluctuations are often rate-limiting to enzyme catalysis, primarily through product release, with the chemical reaction occurring much more quickly...
February 2016: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/26592947/spatial-reorientation-experiments-for-nmr-of-solids-and-partially-oriented-liquids
#19
REVIEW
Rachel W Martin, John E Kelly, Kelsey A Collier
Motional reorientation experiments are extensions of Magic Angle Spinning (MAS) where the rotor axis is changed in order to average out, reintroduce, or scale anisotropic interactions (e.g. dipolar couplings, quadrupolar interactions or chemical shift anisotropies). This review focuses on Variable Angle Spinning (VAS), Switched Angle Spinning (SAS), and Dynamic Angle Spinning (DAS), all of which involve spinning at two or more different angles sequentially, either in successive experiments or during a multidimensional experiment...
November 2015: Progress in Nuclear Magnetic Resonance Spectroscopy
https://www.readbyqxmd.com/read/26592946/nuclear-magnetic-resonance-studies-of-tunneling-in-quantum-solids-at-very-low-temperatures
#20
REVIEW
N S Sullivan
A review is given of recent NMR experiments at ultra-low temperatures that explore properties of quantum fluids and solids in regimes where unusual dynamics characterizes the low temperature behavior. It is shown how careful analysis of the NMR spin-spin and spin-lattice relaxation rates and spectral properties can determine fundamental thermodynamic features that are otherwise difficult to observe using standard thermodynamic methods. The review focuses on the observation of the diffusion of vacancies and isotopic impurities in solid hydrogen and solid helium by quantum tunneling at low temperatures...
November 2015: Progress in Nuclear Magnetic Resonance Spectroscopy
journal
journal
34140
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"