Lipids and Biomembranes

ID #2192

What exactly does "interactions with neighbors" (for lipids) mean? What kind of interactions do they have/what is the purpose of those interactions?

The tails are nonpolar, so they associate with each other via hydrophobic interactions. The interactions between the fatty acid tails are Van der Waals interactions. The amount of interactions between fatty acid tails help determine the fluidity of the membrane. 

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