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Latest Molecular motor Stories

2013-12-18 11:42:28

Researchers have created a new type of molecular motor made of DNA and demonstrated its potential by using it to transport a nanoparticle along the length of a carbon nanotube. The design was inspired by natural biological motors that have evolved to perform specific tasks critical to the function of cells, said Jong Hyun Choi, a Purdue University assistant professor of mechanical engineering. Whereas biological motors are made of protein, researchers are trying to create synthetic...

2013-04-19 17:55:22

Scientists have revealed how a bacterial enzyme has evolved an energy-efficient method to move long distances along DNA. The findings, published in Science, present further insight into the coupling of chemical and mechanical energy by a class of enzymes called helicases, a widely-distributed group of proteins, which in human cells are implicated in some cancers. The new helicase mechanism discovered in this study, led by researchers from the University of Bristol and the Technische...

2011-11-07 16:43:52

How a molecular traffic jam impacts cell division Interdisciplinary research between biology and physics aims to understand the cell and how it organizes internally. The mechanisms inside the cell are very complicated. LMU biophysicist Professor Erwin Frey, who is also a member of the Cluster of Excellence “Nanosystems Initiative Munich” (NIM) is working with his group on one particular issue involved in the cell´s life. The professor for statistical and biological physics...

2011-09-20 13:41:22

Dr. Katja Fälber and Professor Oliver Daumke, structural biologists at the Max Delbrück Center for Molecular Medicine (MDC) Berlin-Buch, together with researchers from Freie Universität (FU) Berlin, have determined the molecular structure of dynamin, a ℠wire-puller´ that mediates nutrient uptake into the cell. Since pathogens such as HIV can also enter the body´s cells in this way, understanding the underlying molecular mechanisms...

Image 1 - Researchers Develop Motor One Nanometer Wide
2011-09-05 11:39:59

  Researchers have developed an electric motor that is just a billionth of a meter across. The motor could be used in nanotechnology and in medicine, where tiny devices are used for efficient tasks. The tiny rotors are based on single molecules and is the first that can be individually driven by an electric current. The device is now the world's smallest electric motor at 1 nanometer across, shattering the old record of 200 nanometers across.  A single strand of human...

2011-08-11 21:49:21

The transport system inside living cells is a well-oiled machine with tiny protein motors hauling chromosomes, neurotransmitters and other vital cargo around the cell. These molecular motors are responsible for a variety of critical transport jobs, but they are not always on the go. They can put themselves into "energy save mode" to conserve cellular fuel and, as a consequence, control what gets moved around the cell, and when. A new study by Carnegie Mellon University biochemists, published...

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2010-11-07 07:33:07

Rice University bioengineers measure pulling power of hitched pairs of protein motors A new study by Rice University bioengineers finds that the workhorse proteins that move cargo inside living cells behave like prima donnas. The protein, called kinesin, is a two-legged molecular machine. Rice's scientists invented tools that could measure the pulling power of kinesin both singly and in pairs, and they report this week in Biophysical Journal that kinesins don't work well together -- in...

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2010-04-16 08:53:21

Findings shed light on brain malformation that kills infants A University of Utah researcher helped discover how a "wimpy" protein motor works with two other proteins to gain the strength necessary to move nerve cells and components inside them. The findings shed light on brain development and provide clues to a rare brain disorder that often kills babies within months of birth. "It's like the 'Transformers' films: You start with this puny little car and it becomes a big robot capable of...

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2010-02-18 12:55:00

Life's smallest motor, a protein that shuttles cargo within cells and helps cells divide, does so by rocking up and down like a seesaw, according to research conducted by scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory and Brandeis University. The researchers created high-resolution snapshots of a protein motor, called kinesin, as it walked along a microtubule, which are tube-shaped structures that form a cell's "skeleton." The result is the closest look...

2009-12-02 18:39:59

A new study reveals how molecular motors that power important subcellular movements can generate cyclical motion. The research, published by Cell Press in the December issue of the Biophysical Journal, opens a new door to understanding motor molecules by using a computer program that faithfully simulates movement of hair-like cellular projections. Many cells and single-celled organisms have tiny appendages called cilia and flagella that can wave or oscillate to move fluid across the cell...


Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
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