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Cytokinetic bridge triggers de novo lumen formation in vivo
TLDR
It is reported that premature bridge cleavage through laser ablation or inhibiting abscission using optogenetic clustering of Rab11 result in disrupted lumen formation.
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Functional analysis of the N-terminal basic motif of a eukaryotic satellite RNA virus capsid protein in replication and packaging
TLDR
It is demonstrated that replication of Satellite tobacco mosaic virus (STMV) is controlled by the cooperative interaction between STMV CP and the helper virus (HV) Tobacco mosaicirus (TMV) replicase.
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Anisotropy links cell shapes to tissue flow during convergent extension
TLDR
Changes in cell shape and alignment over time in the Drosophila germband predict the onset of rapid cell rearrangement in both wild-type and snail twist mutant embryos, and it is predicted that in anisotropic tissues, two experimentally accessible metrics of cell patterns are required to determine whether a developing tissue is in a solid-like or fluid-like state.
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RNA topology remolds electrostatic stabilization of viruses.
TLDR
Using field theoretic formulation it is shown that the inherently branched RNA secondary structure allows viruses to maximize the amount of encapsulated genome and make assembly more efficient, allowing viral RNAs to out-compete cellular RNAs during replication in infected host cells.
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Effects of RNA branching on the electrostatic stabilization of viruses.
TLDR
It is shown that the secondary structure of RNA may result in negative osmotic pressures while a linear polymer causes positive osmosis pressures for the same conditions, which may suggest that the branched structure makes the RNA more effectively packaged and the virion more stable.
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In vitro protease cleavage and computer simulations reveal the HIV-1 capsid maturation pathway
TLDR
Combining the experimental data and computer simulations, the results suggest a sequential combination of both displacive and disassembly/reassembly processes for HIV-1 maturation.
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Effects of RNA sequence specificity in the electrostatic stabilization of viruses
TLDR
It is shown that the secondary structure of RNA may result in negative osmotic pressures while a linear polymer causes positive osmosis pressures for the same conditions, which may suggest that the branched structure makes the RNA more effectively packaged and the virion more stable.
Tissue Flow Induces Cell Shape Changes During Organogenesis.
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Impact of a nonuniform charge distribution on virus assembly.
TLDR
This work finds that this nonuniform charge distribution from the protein shell strongly affects the optimal genome length and that it can explain the experimentally observed phenomenon of overcharging of virus and viruslike particles.
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3D viscoelastic drag forces drive changes to cell shapes during organogenesis in the zebrafish embryo.
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