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[NMR paper] NMR tools to detect protein allostery
Mar 02, 2024 - 3:40 PM - by nmrlearner
nmrlearner's Avatar NMR tools to detect protein allostery

Allostery is a fundamental mechanism of cellular homeostasis by intra-protein communication between distinct functional sites. It is an internal process of proteins to steer interactions not only with each other but also with other biomolecules such as ligands, lipids, and nucleic acids. In addition, allosteric regulation is particularly important in enzymatic activities. A major challenge in structural and molecular biology today is unraveling allosteric sites in proteins, to elucidate the...

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[NMR paper] A Novel NMR-Based Protocol to Screen Ultralow Molecular Weight Fragments
Mar 01, 2024 - 10:10 PM - by nmrlearner
nmrlearner's Avatar A Novel NMR-Based Protocol to Screen Ultralow Molecular Weight Fragments

Fragment-based lead discovery has emerged as one of the most efficient screening strategies for finding hit molecules in drug discovery. Recently, a novel strategy based on a class of fragments characterized by an ultralow molecular weight (ULMW) has been proposed. These fragments bind to the target with a very low affinity, requiring reliable biophysical methods for detection. The most notable application of ULMW used a set of 81 fragments, named MiniFrags, and screened them by X-ray...

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[NMR paper] Progress, Challenges and Opportunities of NMR and XL-MS for Cellular Structural Biology
Mar 01, 2024 - 10:10 PM - by nmrlearner
nmrlearner's Avatar Progress, Challenges and Opportunities of NMR and XL-MS for Cellular Structural Biology

The validity of protein structures and interactions, whether determined under ideal laboratory conditions or predicted by AI tools such as Alphafold2, to precisely reflect those found in living cells remains to be examined. Moreover, understanding the changes in protein structures and interactions in response to stimuli within living cells, under both normal and disease conditions, is key to grasping proteins' functionality and cellular processes. Nevertheless, achieving high-resolution...

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[NMR paper] Sortase-Catalyzed Protein Domain Inversion
Mar 01, 2024 - 10:10 AM - by nmrlearner
nmrlearner's Avatar Sortase-Catalyzed Protein Domain Inversion


Angewandte Chemie International Edition, EarlyView.

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NMR spectroscopy brings invisible protein states into focus - Nature.com
Feb 29, 2024 - 10:00 PM - by nmrlearner
nmrlearner's Avatar NMR spectroscopy brings invisible protein states into focus - Nature.com

NMR spectroscopy brings invisible protein states into focus Nature.com Read here
0 Replies | 81 Views
[NMR paper] Reconstitution and resonance assignments of yeast OST subunit Ost4 and its critical mutant Ost4V23D in liposomes by solid-state NMR
Feb 29, 2024 - 10:00 PM - by nmrlearner
nmrlearner's Avatar Reconstitution and resonance assignments of yeast OST subunit Ost4 and its critical mutant Ost4V23D in liposomes by solid-state NMR

N-linked glycosylation is an essential and highly conserved co- and post-translational protein modification in all domains of life. In humans, genetic defects in N-linked glycosylation pathways result in metabolic diseases collectively called Congenital Disorders of Glycosylation. In this modification reaction, a mannose rich oligosaccharide is transferred from a lipid-linked donor substrate to a specific asparagine side-chain within the -N-X-T/S- sequence (where X ? Proline) of the nascent...

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0 Replies | 81 Views
[NMR paper] 2'-(19)F labelling of ribose in RNAs: a tool to analyse RNA/protein interactions by NMR in physiological conditions
Feb 29, 2024 - 10:00 PM - by nmrlearner
nmrlearner's Avatar 2'-(19)F labelling of ribose in RNAs: a tool to analyse RNA/protein interactions by NMR in physiological conditions

Protein-RNA interactions are central to numerous cellular processes. In this work, we present an easy and straightforward NMR-based approach to determine the RNA binding site of RNA binding proteins and to evaluate the binding of pairs of proteins to a single-stranded RNA (ssRNA) under physiological conditions, in this case in nuclear extracts. By incorporation of a ^(19)F atom on the ribose of different nucleotides along the ssRNA sequence, we show that, upon addition of an RNA binding protein,...

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