Journal
NATURE COMMUNICATIONS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms6984
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Funding
- Deutsche Forschungsgemeinschaft [SFB803]
- US National Institutes of Health [P01 GM072694]
- European Research Council (FP7) [336479-MEMPART]
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [P01GM072694] Funding Source: NIH RePORTER
- MRC [MR/K01577X/1, MC_UU_12010/9] Funding Source: UKRI
- Medical Research Council [MR/K01577X/1, MC_UU_12010/9] Funding Source: researchfish
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The clustering of proteins and lipids in distinct microdomains is emerging as an important principle for the spatial patterning of biological membranes. Such domain formation can be the result of hydrophobic and ionic interactions with membrane lipids as well as of specific protein-protein interactions. Here using plasma membrane-resident SNARE proteins as model, we show that hydrophobic mismatch between the length of transmembrane domains (TMDs) and the thickness of the lipid membrane suffices to induce clustering of proteins. Even when the TMDs differ in length by only a single residue, hydrophobic mismatch can segregate structurally closely homologous membrane proteins in distinct membrane domains. Domain formation is further fine-tuned by interactions with polyanionic phosphoinositides and homo and heterotypic protein interactions. Our findings demonstrate that hydrophobic mismatch contributes to the structural organization of membranes.
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