Results 41 to 50 of about 130,849 (328)

Discovery of intramolecular signal transduction network based on a new protein dynamics model of energy dissipation. [PDF]

open access: yesPLoS ONE, 2012
A novel approach to reveal intramolecular signal transduction network is proposed in this work. To this end, a new algorithm of network construction is developed, which is based on a new protein dynamics model of energy dissipation. A key feature of this
Cheng-Wei Ma, Zhi-Long Xiu, An-Ping Zeng
doaj   +1 more source

Autopromotion of K-Ras4B Feedback Activation Through an SOS-Mediated Long-Range Allosteric Effect

open access: yesFrontiers in Molecular Biosciences, 2022
The Ras-specific guanine nucleotide exchange factors Son of Sevenless (SOS) regulates Ras activation by converting inactive GDP-bound to active GTP-bound states.
Xuan He   +9 more
doaj   +1 more source

Cyclic nucleotide-gated channels: structural basis of ligand efficacy and allosteric modulation [PDF]

open access: yes, 1997
Most working proteins, including metabolic enzymes, transcription regulators, and membrane receptors, transporters, and ion channels, share the property of allosteric coupling. The term 'allosteric' means that these proteins mediate indirect interactions
Lester, Henry A.   +2 more
core   +1 more source

The allosteric regulation of pyruvate kinase [PDF]

open access: yesFEBS Letters, 1996
Crystallographic and mutagenesis studies have unravelled the general features of the allosteric transition mechanism in pyruvate kinase. The enzyme displays a dramatic conformational change in going from the T‐ to the R‐state. All three domains forming each subunit of the tetrameric enzyme undergo simultaneous and concerted rotations, in such a way ...
MATTEVI, ANDREA   +2 more
openaire   +3 more sources

Dimeric allostery mechanism of the plant circadian clock photoreceptor ZEITLUPE.

open access: yesPLoS Computational Biology, 2021
In Arabidopsis thaliana, the Light-Oxygen-Voltage (LOV) domain containing protein ZEITLUPE (ZTL) integrates light quality, intensity, and duration into regulation of the circadian clock.
Francesco Trozzi   +4 more
doaj   +1 more source

Allosteric modulation of G protein-coupled receptor signaling

open access: yesFrontiers in Endocrinology, 2023
G protein-coupled receptors (GPCRs), the largest family of transmembrane proteins, regulate a wide array of physiological processes in response to extracellular signals. Although these receptors have proven to be the most successful class of drug targets,
Siyuan Shen   +6 more
doaj   +1 more source

Dynamic allosteric control of noncovalent DNA catalysis reactions [PDF]

open access: yes, 2008
Allosteric modulation of catalysis kinetics is prevalent in proteins and has been rationally designed for ribozymes. Here, we present an allosteric DNA molecule that, in its active configuration, catalyzes a noncovalent DNA reaction.
Winfree, Erik, Zhang, David Yu
core   +1 more source

Allosteric Regulation of E-Cadherin Adhesion [PDF]

open access: yesJournal of Biological Chemistry, 2015
Cadherins are transmembrane adhesion proteins that maintain intercellular cohesion in all tissues, and their rapid regulation is essential for organized tissue remodeling. Despite some evidence that cadherin adhesion might be allosterically regulated, testing of this has been hindered by the difficulty of quantifying altered E-cadherin binding affinity
Nitesh, Shashikanth   +8 more
openaire   +2 more sources

Quantifying Dynamic Regulation in Metabolic Pathways with Nonparametric Flux Inference [PDF]

open access: yes, 2019
One of the central tasks in systems biology is to understand how cells regulate their metabolism. Hierarchical regulation analysis is a powerful tool to study this regulation at the metabolic, gene-expression, and signaling levels.
He, Fei, Stumpf, Michael P H
core   +1 more source

The energy landscape analysis of cancer mutations in protein kinases. [PDF]

open access: yesPLoS ONE, 2011
The growing interest in quantifying the molecular basis of protein kinase activation and allosteric regulation by cancer mutations has fueled computational studies of allosteric signaling in protein kinases.
Anshuman Dixit, Gennady M Verkhivker
doaj   +1 more source

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