HOME >> BIOLOGY >> NEWS
Flexible Membranes - Moving Through The Twilight Zone Between The Nano- And The,,Microworld

Flexible membranes have been studied for a long time in biology, pharmacology and medicine since they represent the main structural element for the amazing architecture of the living cell. In addition, physicists and chemists have been fascinated by the unusual properties of these structures which are very anisotropic: They consist of bilayers of molecules and thus are very thin with a thickness of only 4 - 5 nanometers; their lateral extension, however, is much larger and can be tens of micrometers. Therefore, flexible membranes are able to bridge the gap between the nano- and the microworld.

So far, our understanding of these structures was based on two rather different theoretical approaches. On the one hand, the behavior of membranes on the micrometer scale is well understood in terms of smooth surfaces as described by differential geometry. In this way, one can explain the many different shapes and topologies as observed in the optical microscope. On the other hand, our view about the membranes on the nanometer scale comes from computer simulations in which one studies discrete molecular models with atomic resolution. However, these two approaches have remained rather distinct and unrelated.

Recently, researchers at the Max Planck Institute of Colloids and Interfaces (Physical Review Letters 82, 4 January 1999) have made the first explicit connection between these two different levels corresponding to the nano- and the microworld, respectively . Using Molecular Dynamics simulations of rather large membrane segments, they studied both the self-assembly process and the physical properties of such bilayer membranes, compare Fig.1. On molecular scales, these membranes are observed to be rather mobile and to have rough surfaces arising from molecular protrusions, i.e., from the relative displacements of individual molecules. On length scales, which are only somewhat larger than the membrane thickness, however, the membranes are found to undergo smooth bend
'"/>

Contact: Thomas Weikl
weikl@mpikg-teltow.mpg.de
49-3328-46-590
Max-Planck-Gesellschaft
3-Jan-1999


Page: 1 2

Related biology news :

1. Flexible pain relief with morphine-free poppy
2. Flexible joints associated with chronic fatigue syndrome, researchers find
3. Dismantling Dangerous Genetic Codes With A Faster, More Flexible RNA Mimic
4. Structure Of The Plasma Membrane Proton Pump Offers A First Glimpse Of The Mechanism Of Ion Pumping Across Membranes
5. Scientists Use IGF-I To Grow New Membranes Around Neurons
6. Researchers Corral Millions Of Microscopic Membranes
7. Moving targets: when it comes to patterns, motion gets factored in
8. Moving the target for osteoporosis treatment
9. Moving gene in plant results in increased production of amino acid
10. Moving towards a cure for diabetes
11. Moving DNA Molecules With Magnetic Tweezers

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/5/2018)... ... October 04, 2018 , ... ... University of Illinois Extension and Monroe County Economic Development Corporation (EDC), has ... Institute of Food and Agriculture (NIFA) Non-Land Grant College of Agriculture (NLGCA) ...
(Date:10/3/2018)... , ... October 03, 2018 , ... ... York City, announces the appointment of healthcare visionary, Jimmy Lee, as Strategic Advisor ... over 30 years of healthcare industry experience. As a Senior Executive at Anthem, ...
(Date:10/2/2018)... ... October 02, 2018 , ... Through this webinar, sponsored by ... They will also learn the role of calcium kinetics in cardiac safety testing. The ... officer at PPSC Biography; and Tsang Wai Lam, an assay development scientist at PPSC. ...
Breaking Biology News(10 mins):
(Date:9/27/2018)... , ... September 26, 2018 , ... ... are way ahead of their primary care physicians, according to a new Zeldis ... study, patients and doctors were asked about consumer adoption of fitness and health ...
(Date:9/24/2018)... ... September 24, 2018 , ... ReGrow Helmet , ... highest quality and most affordable option for hair regrowth in the comfort of one’s ... on October 2, 2018. , The sophisticated design and advanced technology of the ...
(Date:9/15/2018)... ... 14, 2018 , ... Nationally recognized public accounting and consulting firm Cherry ... of the Firm’s Nashville practice, on her appointment to Launch Tennessee’s Board ... named Managing Partner of the Firm’s Nashville practice in December 2017 . In this ...
(Date:9/12/2018)... ... September 12, 2018 , ... NDA ... professional and former Senior Director of Regulatory Affairs and Quality Systems at WellDoc, ... Director of Regulatory Affairs and Quality Systems at WellDoc, Inc., she conducted quality ...
Breaking Biology Technology:
Cached News: