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Cited by 272

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Tuning lipid mixtures to induce or suppress domain formation across leaflets of unsupported asymmetric bilayers

Open access
Collins, Marcus D., Keller, Sarah L.·2008·Proceedings of the National Academy of Sciences

Abstract

Plasma membranes of cells are asymmetric in both lipid and protein composition. The mechanism by which proteins on both sides of the membrane colocalize during signaling events is unknown but may be due to the induction of inner leaflet domains by the outer leaflet. Here we show that liquid domains form in asymmetric Montal–Mueller planar bilayers in which one leaflet's composition would phase-separate in a symmetric bilayer and the other's would not. Equally important, by tuning the lipid composition of the second leaflet, we are able to suppress domains in the first leaflet. When domains are present in asymmetric membranes, each leaflet contains regions of three distinct lipid compositions, implying strong interleaflet interactions. Our results show that mechanisms of domain induction between the outer and inner leaflets of cell plasma membranes do not necessarily require the participation of membrane proteins. Based on these findings, we suggest mechanisms by which cells could actively regulate protein function by modulating local lipid composition or interleaflet interactions.

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Metadata

Authors
Collins, M. D., & Keller, S. L.
Venue
Proceedings of the National Academy of Sciences
Published
2008-01-08
Volume
105
Issue
1
Pages
124-128
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1979094684
Cited by
272
References
33
FWCI
8.69
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Tuning lipid mixtures to induce or suppress domain formation across leaflets of unsupported asymmetric bilayers. https://app.cochat.ai/papers/10.1073/pnas.0702970105
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Collins, M. D., & Keller, S. L. (2008). Tuning lipid mixtures to induce or suppress domain formation across leaflets of unsupported asymmetric bilayers. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0702970105

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