Publications de Jayasubba Reddy Yarava

Similarities and Differences among Protein Dynamics Studied by Variable Temperature Nuclear Magnetic Resonance Relaxation

David Lyndon Emsley, Jayasubba Reddy Yarava, Andrea Bertarello, Baptiste Busi, François Freymond

Understanding and describing the dynamics of proteins is one of the major challenges in biology. Here, we use multifield variable-temperature NMR longitudinal relaxation (R-1) measurements to determine the hierarchical activation energies of motions of fou ...

AMER CHEMICAL SOC2021

Cellulose phosphorylation comparison and analysis of phosphorate position on cellulose fibers

David Lyndon Emsley, Jayasubba Reddy Yarava, Michel Bardet, Julien Bras

Chemical modifications of cellulose fibers as pretreatment for cellulose nanofibrils (CNF) production have been investigated to improve the production process and the quality of obtained cellulosic nanomaterial. In this study, phosphorylation of cellulose ...

ELSEVIER SCI LTD2020

Measurement of Proton Spin Diffusivity in Hydrated Cementitious Solids

David Lyndon Emsley, Brennan James Walder, Federico Maria Paruzzo, Jayasubba Reddy Yarava, Bradley Floyd Chmelka

The study of hydration and crystallization processes involving inorganic oxides is often complicated by poor long-range order and the formation of heterogeneous domains or surface layers. In solid-state NMR, H-1-H-1 spin diffusion analyses can provide info ...

2019

DNP enhanced NMR with flip-back recovery

David Lyndon Emsley, Arthur César Pinon, Brennan James Walder, Jayasubba Reddy Yarava, Snaedis Björgvinsdóttir

Academic Press Inc - Elsevier Science2018

Probing Protein Dynamics Using Multifield Variable Temperature NMR Relaxation and Molecular Dynamics Simulation

David Lyndon Emsley, Albert Hofstetter, Nicola Salvi, Jayasubba Reddy Yarava, Baptiste Busi

Understanding the interplay between protein function and dynamics is currently one of the fundamental challenges of physical biology. Recently, a method using variable temperature solid-state nuclear magnetic resonance relaxation measurements has been prop ...

2018

Forcing the "lazy" protons to work

Jayasubba Reddy Yarava

The combination of cross-polarization (CP) with flip-back (FB) pulse has enabled in NMR the enhancement of C-13 sensitivity and the decrease of the recycling delay at both moderate and fast magic-angle spinning (MAS) frequencies. However, only continuous-w ...

ROYAL SOC CHEMISTRY2018

Exploring the salt-cocrystal continuum with solid-state NMR using natural-abundance samples: implications for crystal engineering

Jayasubba Reddy Yarava

There has been significant recent interest in differentiating multicomponent solid forms, such as salts and cocrystals, and, where appropriate, in determining the position of the proton in the X-H center dot center dot center dot A-Y X-center dot center do ...

International Union of Crystallography (IUCr)2017

Solid-state NMR at natural isotopic abundance for the determination of conformational polymorphism - the case of designed beta-turn peptides containing di-prolines

Jayasubba Reddy Yarava, Rajesh Sonti

The proton double quantum-carbon single quantum correlation experiment has been applied to designed peptides in the solid state in natural isotopic abundance. Analogous to nOe studies in solution, through-space double-quantum connectivities have been explo ...

Royal Society of Chemistry2017

Solvent suppression in DNP enhanced solid state NMR

David Lyndon Emsley, Aaron James Rossini, Jayasubba Reddy Yarava

We show how DNP enhanced solid-state NMR spectra can be dramatically simplified by suppression of solvent signals. This is achieved by (i) exploiting the paramagnetic relaxation enhancement of solvent signals relative to materials substrates, or (ii) by us ...

Academic Press Inc - Elsevier Science2017

Proton-detected 3D N-15/H-1/H-1 isotropic/anisotropic/isotropic chemical shift correlation solid-state NMR at 70 kHz MAS

Jayasubba Reddy Yarava

Chemical shift anisotropy (CSA) tensors offer a wealth of information for structural and dynamics studies of a variety of chemical and biological systems. In particular, CSA of amide protons can provide piercing insights into hydrogen-bonding interactions ...

Academic Press Inc Elsevier Science2016