Membrane tension and membrane fusion

Michael M. Kozlov*, Leonid V. Chernomordik

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Diverse cell biological processes that involve shaping and remodeling of cell membranes are regulated by membrane lateral tension. Here we focus on the role of tension in driving membrane fusion. We discuss the physics of membrane tension, forces that can generate the tension in plasma membrane of a cell, and the hypothesis that tension powers expansion of membrane fusion pores in late stages of cell-to-cell and exocytotic fusion. We propose that fusion pore expansion can require unusually large membrane tensions or, alternatively, low line tensions of the pore resulting from accumulation in the pore rim of membrane-bending proteins. Increase of the inter-membrane distance facilitates the reaction.

Original languageEnglish
Pages (from-to)61-67
Number of pages7
JournalCurrent Opinion in Structural Biology
Volume33
DOIs
StatePublished - 1 Aug 2015

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