Membrane lipids hop in and out of rafts in the blink of an eye

Researchers in Japan, India and France have found that molecules move into and out of a specialized region of the cell membrane, called the 'raft domain', at unexpectedly fast rates. The discovery was made possible by developing ...

Researchers discover surprising process behind sense of touch

Biologists on the Florida campus of The Scripps Research Institute (TSRI) have discovered a new mechanism that likely underlies how we feel force or touch. Their study suggests that "rafts" of fatty lipids on the cell surface ...

Why do antidepressants take so long to work?

An episode of major depression can be crippling, impairing the ability to sleep, work, or eat. In severe cases, the mood disorder can lead to suicide. But the drugs available to treat depression, which can affect one in six ...

Broadening the bilayer

Lipid molecules have split personalities—one part loves water, whereas the other avoids it at all costs. Lipids make up cell membranes, the frontline defense in preventing cellular access to bacterial and viral invaders.

Leading bugs to the death chamber: A kinder face of cholesterol

Cells of our immune system kill pathogens by enclosing them in a compartment called the phagosome. The phagosome undergoes programmed maturation, where the pathogen is degraded. Intimately linked to this degradation is active ...

Going inside an ant raft (w/ Video)

Three years ago, Georgia Institute of Technology researchers took a close look at how fire ants work together to build waterproof rafts to stay alive. By looking at the edges and tops of rafts, the team discovered that ants ...

Ants build raft to escape flood, protect queen

When facing a flood, ants build rafts and use both the buoyancy of the brood and the recovery ability of workers to minimize injury or death, according to a study published in PLOS ONE on February 19, 2014 by Jessica Purcell ...

Flexible, stretchable fire-ant rafts

What do Jell-O, toothpaste, and floating fire-ant rafts have in common? All are so-called "viscoelastic" materials, meaning that they can both resist flow under stress, like honey, and they can bounce back to their original ...

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