Hydro-osmotic Instabilities in Active Membrane Tubes.

Al-Izzi, Sami C; Rowlands, George; Sens, Pierre; Turner, Matthew S

Al-Izzi, Sami C; Rowlands, George; Sens, Pierre; Turner, Matthew S.

Afiliação

Al-Izzi SC; Department of Mathematics, University of Warwick, Coventry CV4 7AL, United Kingdom.
Rowlands G; Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.
Sens P; Institut Curie, PSL Research University, CNRS, Physical Chemistry Curie, F-75005 Paris, France.
Turner MS; Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 168, F-75005 Paris, France.

Phys Rev Lett ; 120(13): 138102, 2018 Mar 30.

Article em En | MEDLINE | ID: mdl-29694218

ABSTRACT

ABSTRACT

We study a membrane tube with unidirectional ion pumps driving an osmotic pressure difference. A pressure-driven peristaltic instability is identified, qualitatively distinct from similar tension-driven Rayleigh-type instabilities on membrane tubes. We discuss how this instability could be related to the function and biogenesis of membrane bound organelles, in particular, the contractile vacuole complex. The unusually long natural wavelength of this instability is in agreement with that observed in cells.

Assuntos

Membrana Celular/química; Membrana Celular/metabolismo; Modelos Biológicos; Modelos Químicos; Vacúolos/química; Vacúolos/metabolismo; Pressão Osmótica

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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Vacúolos / Membrana Celular / Modelos Biológicos / Modelos Químicos Idioma: En Ano de publicação: 2018 Tipo de documento: Article

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