Results 31 to 40 of about 257,652 (357)

Cryo-electron tomography structure of Arp2/3 complex in cells reveals new insights into the branch junction

open access: yesNature Communications, 2020
The actin-related protein (Arp)2/3 complex nucleates branched actin filament networks pivotal for cell migration, endocytosis and pathogen infection. Here, authors report a 9.0 Å resolution structure of the actin filament Arp2/3 complex branch junction ...
Florian Fäßler   +4 more
doaj   +1 more source

A Proline-Rich Element in the Type III Secretion Protein FlhB Contributes to Flagellar Biogenesis in the Beta- and Gamma-Proteobacteria

open access: yesFrontiers in Microbiology, 2020
Flagella are bacterial organelles of locomotion. Their biogenesis is highly coordinated in time and space and relies on a specialized flagellar type III secretion system (fT3SS) required for the assembly of the extracellular hook, rod, and filament parts
John C. Hook   +9 more
doaj   +1 more source

Head-head interactions of resting myosin crossbridges in intact frog skeletal muscles, revealed by synchrotron x-ray fiber diffraction. [PDF]

open access: yesPLoS ONE, 2012
The intensities of the myosin-based layer lines in the x-ray diffraction patterns from live resting frog skeletal muscles with full thick-thin filament overlap from which partial lattice sampling effects had been removed were analyzed to elucidate the ...
Kanji Oshima   +3 more
doaj   +1 more source

Direct imaging of RecA nucleation and growth on single molecules of SSB-coated ssDNA. [PDF]

open access: yes, 2012
Escherichia coli RecA is the defining member of a ubiquitous class of DNA strand-exchange proteins that are essential for homologous recombination, a pathway that maintains genomic integrity by repairing broken DNA.
Bell, Jason C   +3 more
core   +2 more sources

Heterologous protein production in filamentous fungi

open access: yesApplied Microbiology and Biotechnology, 2023
Abstract Filamentous fungi are able to produce a wide range of valuable proteins and enzymes for many industrial applications. Recent advances in fungal genomics and experimental technologies are rapidly changing the approaches for the development and use of filamentous fungi as hosts for the production of both ...
Dujuan Liu   +2 more
openaire   +6 more sources

In Vitro Autonomous Construction of the Flagellar Axial Structure in Inverted Membrane Vesicles

open access: yesBiomolecules, 2020
The bacterial flagellum is a filamentous organelle extending from the cell surface. The axial structure of the flagellum consists of the rod, hook, junction, filament, and cap.
Hiroyuki Terashima   +5 more
doaj   +1 more source

Cysteine-rich protein 2 accelerates actin filament cluster formation. [PDF]

open access: yesPLoS ONE, 2017
Filamentous actin (F-actin) forms many types of structures and dynamically regulates cell morphology and movement, and plays a mechanosensory role for extracellular stimuli. In this study, we determined that the smooth muscle-related transcription factor,
Takanori Kihara   +4 more
doaj   +1 more source

The molecular mechanism of load adaptation by branched actin networks

open access: yeseLife, 2022
Branched actin networks are self-assembling molecular motors that move biological membranes and drive many important cellular processes, including phagocytosis, endocytosis, and pseudopod protrusion.
Tai-De Li   +4 more
doaj   +1 more source

Phosphorylation of the Arp2 subunit relieves auto-inhibitory interactions for Arp2/3 complex activation. [PDF]

open access: yes, 2011
Actin filament assembly by the actin-related protein (Arp) 2/3 complex is necessary to build many cellular structures, including lamellipodia at the leading edge of motile cells and phagocytic cups, and to move endosomes and intracellular pathogens.
Barber, Diane L   +3 more
core   +3 more sources

Biochemical characterization of actin assembly mechanisms with ALS-associated profilin variants

open access: yesEuropean Journal of Cell Biology, 2022
Eight separate mutations in the actin-binding protein profilin-1 have been identified as a rare cause of amyotrophic lateral sclerosis (ALS). Profilin is essential for many neuronal cell processes through its regulation of lipids, nuclear signals, and ...
Xinbei Liu   +4 more
doaj   +1 more source

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