Related topics: cells · protein

'Like a magic trick,' certain proteins pass through cell walls

For decades, scientists have wondered how large molecules such as proteins pass through cell walls, also known as plasma membranes, without leaving a trace. That ability is part of what makes certain drugs—including some ...

Direct drug delivery with carbon nanotube porins

Modern medicine relies on an extensive arsenal of drugs to combat deadly diseases such as pneumonia, tuberculosis, HIV-AIDS and malaria. Chemotherapy agents have prolonged lives for millions of cancer patients, and in some ...

How cellular fingertips may help cells 'speak' to each other

What if you found out that you could heal using only a finger? It sounds like science fiction, reminiscent of the 1982 movie "E.T." Well, it turns out that your body's own cells can do something similarly unexpected. Researchers ...

Revealing the way a critical enzyme works in the cell

S-acylation is the process of chemically linking a lipid to protein via a thioester bond. It is an important process of the cell that regulates the localization and function of numerous proteins. It promotes lipid membrane ...

How cells recycle the machinery that drives their motility?

Research groups at University of Helsinki and Institut Jacques Monod, Paris, discovered a new molecular mechanism that promotes cell migration. The discovery sheds light on the mechanisms that drive uncontrolled movement ...

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Cell membrane

The cell membrane (also called the plasma membrane or plasmalemma) is the biological membrane separating the interior of a cell from the outside environment.

It is a semipermeable lipid bilayer found in all cells. It contains a wide variety of biological molecules, primarily proteins and lipids, which are involved in a vast array of cellular processes such as cell adhesion, ion channel conductance and cell signaling. The plasma membrane also serves as the attachment point for both the intracellular cytoskeleton and, if present, the extracellular cell wall.

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