Tubular membrane structures

Urška Jelerčič

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

In presented chapter we focus on the equilibrium shapes of tubular lipid membranes. These shapes are determined using Helfrich model of bending elasticity together with several geometrical constraints (reduced volume and projected length). By varying the constraints, four distinct nonperiodic types of shapes were found: (i) snake-like and (ii) helical structures, (iii) tubes with a spherical body, and (iv) tubes with a discoidal body. The shapes share a common tubular characteristic and can be, depending on their detailed morphology, identified as volume, surface area, or length reservoirs. We present the equilibrium shapes by using numerical computation and by employing simplified analytical models. The validity and accuracy of both approaches is thoroughly presented and the full phase diagram is constructed. Finally, our theoretical results are compared to the previous theoretical and experimental research with a special emphasis on the intercellular biological structures.

Original languageEnglish
Title of host publicationAdvances in Biomembranes and Lipid Self-Assembly
PublisherElsevier B.V.
Pages99-152
Number of pages54
DOIs
StatePublished - 1 Jan 2017
Externally publishedYes

Publication series

NameAdvances in Biomembranes and Lipid Self-Assembly
Volume26
ISSN (Print)2451-9634

Keywords

  • Bending elasticity
  • Biomembranes
  • Lipid membrane
  • Pearled shapes
  • Surface modeling
  • Tubular structures

ASJC Scopus subject areas

  • Biophysics
  • Bioengineering
  • Biochemistry

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