Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Williamson, John J."'
Effects of passive phospholipid flip-flop and asymmetric external fields on bilayer phase equilibria
Autor:
Williamson, John J., Olmsted, Peter D.
Compositional asymmetry between the leaflets of bilayer membranes modifies their phase behaviour, and is thought to influence other important features such as mechanical properties and protein activity. We address here how phase behaviour is affected
Externí odkaz:
http://arxiv.org/abs/1807.03751
Publikováno v:
Phys. Rev. Lett. 121, 238102 (2018)
Cell division and death can be regulated by the mechanical forces within a tissue. We study the consequences for the stability and roughness of a propagating interface, by analysing a model of mechanically-regulated tissue growth in the regime of sma
Externí odkaz:
http://arxiv.org/abs/1708.03138
Autor:
Davis, John Robert, Ainslie, Anna P., Williamson, John J., Ferreira, Ana, Torres-Sánchez, Alejandro, Hoppe, Andreas, Mangione, Federica, Smith, Matthew B., Martin-Blanco, Enrique, Salbreux, Guillaume, Tapon, Nicolas
Publikováno v:
In Current Biology 28 March 2022 32(6):1285-1300
Autor:
Williamson, John J., Olmsted, Peter D.
Publikováno v:
PRL 116, 079801 (2016)
In lieu of abstract, first paragraph reads: Galimzyanov et al. [1] find that line tension between thick liquid-ordered ($L_{o}$) and thinner liquid-disordered ($L_{d}$) registered lipid bilayer phases is minimised by an asymmetric "slip region", leng
Externí odkaz:
http://arxiv.org/abs/1604.03865
Autor:
Williamson, John J., Olmsted, Peter D.
Publikováno v:
Soft Matter 11 (2015) 8948-8959
We study the kinetics governing the attainment of inter-leaflet domain symmetry in a phase-separating amphiphilic bilayer. "Indirect" inter-leaflet coupling via hydrophobic mismatch can induce an instability towards a metastable pattern of locally as
Externí odkaz:
http://arxiv.org/abs/1506.00594
Autor:
Williamson, John J., Olmsted, Peter D.
Publikováno v:
Physical Review E, 92 (2015) 052721
We simulate a phase-separating a bilayer in which the leaflets experience a direct coupling favouring local compositional symmetry ("registered" bilayer phases), and an indirect coupling due to hydrophobic mismatch that favours strong local asymmetry
Externí odkaz:
http://arxiv.org/abs/1505.02078
Autor:
Williamson, John J., Olmsted, Peter D.
Publikováno v:
Biophysical Journal 108 (2015) 1963-1976
We derive a mean-field free energy for the phase behaviour of coupled bilayer leaflets, which is implicated in cellular processes and important to the design of artificial membranes. Our model accounts for amphiphile-level structural features, partic
Externí odkaz:
http://arxiv.org/abs/1408.2744
Autor:
Williamson, John J., Evans, R. Mike L.
We dynamically simulate fractionation (partitioning of particle species) during spinodal gas-liquid separation of a size-polydisperse colloid, using polydispersity up to ~40% and a skewed parent size distribution. We introduce a novel coarse-grained
Externí odkaz:
http://arxiv.org/abs/1407.6683
Within the Free-Volume Asakura-Oosawa-Vrij (FVAO) theory of colloid-polymer mixtures, we show that unphysical gas-liquid binodals predicted in the regime of small attraction range (i.e. polymer size) are caused in part by the use of the Carnahan-Star
Externí odkaz:
http://arxiv.org/abs/1303.4000
Autor:
Williamson, John J., Evans, R. Mike L.
We investigate the effect of metastable gas-liquid (G-L) separation on crystal growth in a system of either monodisperse or slightly size-polydisperse square well particles, using a simulation setup that allows us to focus on the growth of a single c
Externí odkaz:
http://arxiv.org/abs/1208.3804