Quantcast
Last updated on April 16, 2014 at 8:44 EDT

Latest Biological membrane Stories

2009-09-28 12:14:26

Using an RNA-powered nanomotor, University of Cincinnati (UC) biomedical engineering researchers have successfully developed an artificial pore able to transmit nanoscale material through a membrane. In a study led by UC biomedical engineering professor Peixuan Guo, PhD, members of the UC team inserted the modified core of a nanomotor, a microscopic biological machine, into a lipid membrane. The resulting channel enabled them to move both single- and double-stranded DNA through the membrane....

e21c92d42c863df56aa877794c2314f11
2009-07-22 15:40:00

Applying biological molecules from cell membranes to the surfaces of artificial materials is opening peepholes on the very basics of cell-to-cell interaction.Two recently published papers by a University of Oregon biophysicist and colleagues suggest that putting lipids and other cell membrane components on manufactured surfaces could lead to new classes of self-assembling materials for use in precision optics, nanotechnology, electronics and pharmaceuticals.Though the findings are basic, they...

2009-03-09 00:08:17

Curcumin, turmeric's main ingredient, inserts itself into cell membranes and makes them more orderly and resistant to infection, U.S. researchers said. University of Michigan researchers led by Ayyalusamy Ramamoorthy said the membrane goes from being crazy and floppy to being more disciplined and ordered, so information flow through it can be controlled. Probing high-resolution intermolecular interactions in the messy membrane environment has been a major challenge to commonly-used...

2009-02-02 11:07:30

Get ready to send the biology textbooks back to the printer. In a new paper published in Nature, Benjamin Van Mooy, a geochemist with the Woods Hole Oceanographic Institution (WHOI), and his colleagues report that microscopic plants growing in the Sargasso Sea have come up with a completely unexpected way of building their cells. Until now, it was thought that all cells are surrounded by membranes containing molecules called phospholipids "“ oily compounds that contain phosphorus,...

0cfa8216c398b61f6728954e7c8f47e41
2008-05-17 00:20:00

A team of Penn State researchers has developed a simple artificial cell with which to investigate the organization and function of two of the most basic cell components: the cell membrane and the cytoplasm--the gelatinous fluid that surrounds the structures in living cells. The work could lead to the creation of new drugs that take advantage of properties of cell organization to prevent the development of diseases. The team's findings will be published later this month in the Journal of the...

1b4bd82bf70464f669f7a68864a1b2561
2008-03-27 14:40:01

Imagine having one polymer and one small molecule that instantly assemble into a flexible but strong sac in which you can grow human stem cells, creating a sort of miniature laboratory. And that sac, if used for cell therapy, could cloak the stem cells from the human body's immune system and biodegrade upon arriving at its destination, releasing the stem cells to do their work.Futuristic? Only in part. A research team from Northwestern University's Institute for BioNanotechnology in Medicine...

a112651ce9f845e43f232fe94a8a89dc1
2008-03-17 16:41:50

Scientists have known for more than a decade that a protein associated with the HIV virus is good at crossing cell membranes, but they didn't know how it worked. A multidisciplinary team from the University of Illinois has solved the mystery, and their findings could improve the design of therapeutic agents that cross a variety of membrane types.A paper describing their findings appears this month in Angewandte Chemie.The TAT protein transduction domain of the HIV virus has some remarkable...

2007-07-17 06:03:43

By Otter, W K den Shkulipa, S A ABSTRACT The flow behavior of lipid bilayer membranes is characterized by a surface viscosity for in-plane shear deformations, and an intermonolayer friction coefficient for slip between the two leaflets of the bilayer. Both properties have been studied for a variety of coarse-grained double-tailed model lipids, using equilibrium and nonequilibrium molecular dynamics simulations. For lipids with two identical tails, the surface shear viscosity rises rapidly...

2005-09-19 16:10:00

HOUSTON -- It's well known that high doses of aspirin can cause ulcers and temporary deafness, but the biochemical mechanism responsible for these phenomena has never been deciphered. New research from Rice University offers clues, showing for the first time how salicylate -- an active metabolite of aspirin -- weakens lipid membranes. Researchers believe these mechanical changes disrupt the lining of the stomach, which functions to protect underlying tissue from the acidic contents of...

b20902e41f553144362e94594f8c3c621
2005-08-06 15:30:16

Jerusalem - The structure of the membrane protein NhaA has been revealed by researchers at the Hebrew University of Jerusalem and the Max Planck Institute of Germany. Membrane protein research is at the forefront of modern biological study, with great potential consequences for development of new medicinal treatments and genetic engineering of plants. The research on NhaA has been carried out by Etana Padan, the Adelina and Massimo DellaPergola Professor of Life Sciences, with Dr. Rimon...