Results 11 to 20 of about 197,833 (262)

Unprecedented synthesis of a 14-membered hexaazamacrocycle

open access: yesBeilstein Journal of Organic Chemistry, 2023
The transformation of 3-[(ethoxymethylene)amino]-1-methyl-1H-pyrazole-4-carbonitrile into the 14-membered macrocycle, 2,10-dimethyl-2,8,10,16-tetrahydrodipyrazolo[3,4-e:3',4'-l][1,2,4,8,9,11]hexaazacyclotetradecine-4,12-diamine, by the reaction with ...
Anastasia A. Fesenko   +1 more
doaj   +1 more source

Spatial Confinement Causes Lifetime Enhancement and Expansion of Vortex Rings with Positive Filament Tension [PDF]

open access: yes, 2015
We study the impact of spatial confinement on the dynamics of three-dimensional excitation vortices with circular filaments. In a chemically active medium we observe a decreased contraction of such scroll rings and even expanding ones, despite of their ...
Engel, Harald   +2 more
core   +2 more sources

Flow patterns generated by oblate medusan jellyfish: field measurements and laboratory analyses [PDF]

open access: yes, 2005
Flow patterns generated by medusan swimmers such as jellyfish are known to differ according the morphology of the various animal species. Oblate medusae have been previously observed to generate vortex ring structures during the propulsive cycle ...
Colin, Sean P.   +3 more
core   +10 more sources

Bub2 regulation of cytokinesis and septation in budding yeast

open access: yesBMC Cell Biology, 2009
Background The mitotic exit network (MEN) is required for events at the end of mitosis such as degradation of mitotic cyclins and cytokinesis. Bub2 and its binding partner Bfa1 act as a GTPase activating protein (GAP) to negatively regulate the MEN ...
Park Su Young   +4 more
doaj   +1 more source

Motor activity dependent and independent functions for Myosin II in cytokinesis contribute to actomyosin ring assembly and contraction in Schizosaccharomyces pombe [PDF]

open access: yes, 2017
Cytokinesis depends on a contractile actomyosin ring in many eukaryotes [1, 2, 3]. Myosin II is a key component of the actomyosin ring, although whether it functions as a motor or as an actin cross-linker to exert its essential role is disputed [1, 4, 5].
Balasubramanian, Mohan K.   +10 more
core   +1 more source

N-WASP-dependent branched actin polymerization attenuates B-cell receptor signaling by increasing the molecular density of receptor clusters

open access: yeseLife, 2023
Antigen-induced B-cell receptor (BCR) signaling is critical for initiating and regulating B-cell activation. The actin cytoskeleton plays essential roles in BCR signaling.
Anshuman Bhanja   +4 more
doaj   +1 more source

Animal cell cytokinesis: the role of dynamic changes in the plasma membrane proteome and lipidome [PDF]

open access: yes, 2016
In animal cells, cytokinesis is characterised by the formation of the mitotic spindle that signals the assembly of an actomyosin ring between the spindle poles.
Gould, Gwyn W.
core   +2 more sources

A model of membrane contraction predicting initiation and completion of bacterial cell division [PDF]

open access: yes, 2013
Bacterial cell division involves a complex and dynamic sequence of events whereby polymers of the protein FtsZ assemble at the division plane and rearrange to achieve the goal of contracting the cell membrane at the site of cell division, thus dividing ...
Alison Rodger   +59 more
core   +1 more source

The origin of T-tubules

open access: yeseLife, 2023
Ring-like structures made up of caveolae appear to drive the development of membrane invaginations called T-tubules which are important for muscle contraction.
Callum J Quinn, Katharine M Dibb
doaj   +1 more source

Roles Of Hof1p, Bni1p, Bnr1p, And Myo1p In Cytokinesis In Saccharomyces Cerevisiae [PDF]

open access: yes, 2000
Cytokinesis in Saccharomyces cerevisiae occurs by the concerted action of the actomyosin system and septum formation. Here we report on the roles of HOF1,BNI1, and BNR1 in cytokinesis, focusing on Hof1p.
Bi, E.   +2 more
core   +2 more sources

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