Results 31 to 40 of about 1,224,578 (297)

A new structural arrangement in proteins involving lysine NH3 + group and carbonyl

Scientific Reports, 2017
Screening of the Protein Data Bank led to identification of a recurring structural motif where lysine NH3 + group interacts with backbone carbonyl. This interaction is characterized by linear atom arrangement, with carbonyl O atom positioned on the three-
Olga N. Rogacheva, Sergei A. Izmailov, Lyudmila V. Slipchenko, Nikolai R. Skrynnikov   +3 more
doaj   +1 more source

Development of portable NMR polarimeter system for polarized HD target

, 2011
A portable NMR polarimeter system has been developed to measure the polarization of a polarized Hydrogen-Deuteride (HD) target for hadron photoproduction experiments at SPring-8.
Bassan, Bloch, Bloom, Bouchigny, Bouchigny, Breuer, C. Morisaki, Court, Fukushima, Goldman, H. Kohri, Hardy, Hoblit, Honig, Honig, K. Fukuda, K. Ueda, Klein, Kohri, Kohri, Kondo, M. Fujiwara, M. Tanaka, M. Uraki, M. Utsuro, M. Yosoi, Mibe, Moriya, Motizuki, Rouillé, S. Ono, S.Y. Wang, T. Kunimatsu, T. Ohta, Titov, Wei, Wei, Wei   +37 more
core   +1 more source

Theoretical study of NMR relaxation due to rattling phonons [PDF]

, 2007
We calculate the NMR relaxation rate due to quadrupolar coupling of the nucleus to a local, strongly anharmonic phonon mode. As a model potential for a rattling motion we consider a square-well potential.
Abragam, Dahm, Hiroi, Hiroi, Kasahara, Kazuo Ueda, Keppens, Kunes, Nakai, Paschen, Rickayzen, Thomas Dahm, Yamaura, Yoshida   +13 more
core   +4 more sources

Metabolomics Reveals Discrimination of Iranian Propolis Using LC-MS and NMR Analysis [PDF]

Iranian Journal of Chemistry & Chemical Engineering
Propolis is a multifaceted substance that bees produce using nectar from flowers, buds, tree gums, and resins found in plant stems, branches, and leaves.
Masoomeh Sharbatdaran, Mohammad Rezaee, Marzieh Heidarieh, Samira Shahbazi   +3 more
doaj   +1 more source

NMR GHZ

, 1997
We describe the creation of a Greenberger-Horne-Zeilinger (GHZ) state of the form |000>+|111> (three maximally entangled quantum bits) using Nuclear Magnetic Resonance (NMR).
A. Ekert, E. Knill, P. Catasti, R. Jozsa, R. Laflamme, R. Penrose, S. V. S. Mariappan, W. H. Zurek   +7 more
core   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Bromination of endo-7-norbornene derivatives revisited: failure of a computational NMR method in elucidating the configuration of an organic structure

Beilstein Journal of Organic Chemistry, 2023
Previously we reported on the bromination of endo-7-bromonorbornene at different temperatures yielding mixtures of addition products. The structural elucidations of the formed compounds were achieved by NMR spectroscopy. Particularly, the γ-gauche effect
Demet Demirci Gültekin, Arif Daştan, Yavuz Taşkesenligil, Cavit Kazaz, Yunus Zorlu, Metin Balci   +5 more
doaj   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

A real case study on the physicochemical changes in crude palm oil (Elaeis guineensis) during the deep-frying of akara, traditional cowpea-paste balls, in Brazil

Grasas y Aceites, 2019
The objective of this study was to evaluate the physicochemical changes in crude palm oil during a real case of deep-frying of akara, cowpea-paste balls, fried and sold in the streets of Brazil.
S. Feitosa, E. F. Boffo, C. S.C. Batista, J. Velasco, C. S. Silva, R. Bonfim, D. T. Almeida   +6 more
doaj   +1 more source

Multidimensional Profiling of MRI‐Negative Temporal Lobe Epilepsy Uncovers Distinct Phenotypes

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Although hippocampal sclerosis (TLE‐HS) represents the most frequent cause of temporal lobe epilepsy (TLE), up to 30% of patients show no lesion on visual MRI inspection (TLE‐MRIneg). These cases pose diagnostic and therapeutic challenges and are underrepresented in surgical series.
Alice Ballerini, Alessia Casarini, Niccolò Biagioli, Laura Mirandola, Daniela Ballotta, Paul Summers, Simona Scolastico, Laura Madrassi, Maurilio Genovese, Marcella Malagoli, Gaetano Cantalupo, Giada Giovannini, Matteo Pugnaghi, Niccolò Orlandi, Laura Tassi, Valeria Cuccarini, Domenico Aquino, Elena Tartara, Fulvia Palesi, Giuseppe Didato, Paolo Vitali, the 3TLE Study Group, Roberta Di Giacomo, Fabio Doniselli, Federica Mazzi, Carlo Andrea Galimberti, Claudia A. M. Gandini Wheeler‐Kingshott, Stefano Meletti, Anna Elisabetta Vaudano   +28 more
wiley   +1 more source