Results 31 to 40 of about 1,414,042 (194)

High-resolution characterization of centriole distal appendage morphology and dynamics by correlative STORM and electron microscopy

open access: yesNature Communications, 2019
The formation of cilia depends on centriole’s distal appendages. Here, the authors use correlative 3D-superresolution, electron microscopy and electron tomography to detail the architecture of distal appendages, to describe the initial stages of ...
Mathew Bowler   +9 more
doaj   +1 more source

Uptake mechanism of iron-phytosiderophore from the soil based on the structure of yellow stripe transporter

open access: yesNature Communications, 2022
Iron is an essential mineral in plant physiology. YS1 transporter imports iron–phytosiderophore complex (Fe(III)–DMA) from the soil. Here, the authors describe the cryo-EM structures of barley YS1 in complex with substrate, and a synthetic substrate ...
Atsushi Yamagata   +5 more
doaj   +1 more source

Logarithmic decay in single-particle relaxations of hydrated lysozyme powder

open access: yes, 2009
We present the self-dynamics of protein amino acids of hydrated lysozyme powder around the physiological temperature by means of molecular dynamics (MD) simulations.
Baglioni, Piero   +2 more
core   +1 more source

Microscopic mechanism of protein cryopreservation in an aqueous solution with trehalose [PDF]

open access: yes, 2013
In order to investigate the cryoprotective mechanism of trehalose on proteins, we use molecular dynamics computer simulations to study the microscopic dynamics of water upon cooling in an aqueous solution of lysozyme and trehalose.
Corradini, Dario   +3 more
core   +1 more source

Functional Dynamics of Proteins [PDF]

open access: yesComputational and Mathematical Methods in Medicine, 2012
X-ray crystallography captures protein conformational states that are stable enough to be captured. These observable states are simply part of the functional event in the context of protein dynamics. Life at the molecular level has a vibrant nature at physiological temperature, governed by physics laws. Molecular dynamics (MDs) simulations have been
Yang, Lee-Wei   +4 more
openaire   +2 more sources

Characterization of the Transition State of Functional Enzyme Dynamics [PDF]

open access: yes, 2006
Through characterization of the solvent isotope effect on protein dynamics, we have examined determinants of the rate limitation to enzyme catalysis. A global conformational change in Ribonuclease A limits the overall rate of catalytic turnover.
Kovriguine, Evgueni, Loria, J. Patrick
core   +2 more sources

Modeling protein conformational ensembles by guiding AlphaFold2 with Double Electron Electron Resonance (DEER) distance distributions

open access: yesNature Communications
We describe a modified version of AlphaFold2 that incorporates experimental distance distributions into the network architecture for protein structure prediction.
Tianqi Wu   +4 more
doaj   +1 more source

Sustained enzymatic activity and flow in crowded protein droplets

open access: yesNature Communications, 2021
Living cells can harvest environmental energy to drive chemical processes. Here the authors design a minimal artificial system that achieves steady states at similar metabolic densities to microorganisms.
Andrea Testa   +7 more
doaj   +1 more source

Detection of Side Chain Rearrangements Mediating the Motions of Transmembrane Helices in Molecular Dynamics Simulations of G Protein-Coupled Receptors. [PDF]

open access: yes, 2017
Structure and dynamics are essential elements of protein function. Protein structure is constantly fluctuating and undergoing conformational changes, which are captured by molecular dynamics (MD) simulations.
Gaieb, Zied, Morikis, Dimitrios
core   +2 more sources

Dynamically driven protein allostery [PDF]

open access: yesNature Structural & Molecular Biology, 2006
Allosteric interactions are typically considered to proceed through a series of discrete changes in bonding interactions that alter the protein conformation. Here we show that allostery can be mediated exclusively by transmitted changes in protein motions.
Nataliya, Popovych   +3 more
openaire   +2 more sources

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