Tag: "motors" at biology news

Molecular motor implicated in tissue remodeling

...an energy source. While most molecules that act as motors are inside cells and get their energy from a ubiqu..., a whole new principle emerges in which molecular motors in the extracellular matrix operate by extracting energy from the very track they move upon." The re...

Cancer vaccine based on pathogenic listeria bacteria shows promise targeting metastases

..., he could prevent the bacteria from forming actin motors and spreading from cell to cell. The technique worked, and Cerus adapted one of Portnoy's attenuated strains for its vaccine. The particular strain Cerus plans to use for its clinical trials is missing not only ActA but another gene, InlB, which enco...

Students build submarine to track Octopuses

...ng senior Patrick Haley tested its robotic vision, motors and internal computer. Along the way, it encountered and filmed a Giant Pacific Octopus. Tests Included Both Fun and Frustration "There were some fun moments and some frustrating ones during the testing," UA's Vincent said. "We never thought we wou...

Breaking new ground in germ cell guidance

... their way through the body propelled by molecular motors and guided by pathfinding mechanisms. One of the great migratory phenomena in development is the journey undertaken by primordial germ cells in the Drosophila embryo. These cells form externally to the embryo at its posterior pole, are carried within...

Molecular motor myosin VI moves 'hand over hand,' researchers say

... body, hundreds of different types of biomolecular motors help carry out such essential tasks as muscle contraction, moving chromosomes during cell division, and reloading nerve cells so they can repeatedly fire. How these little proteins perform their duties is becoming clearer to scientists using an extre...

New textbook introduces students to the foundations, applications of nanotechnology

... implants that won't be rejected, and biomolecular motors to replicate natural mechanical activity are examples. Each chapter provides an overview, with examples selected for educational value and written in a manner accessible to both science and engineering disciplines. "We avoid jargon and overly-technic...

Cellular problems found behind complex obesity syndrome

...network of so-called microtubules along which tiny motors push and pull proteins, cellular packages and even chromosomes. When the BBS4 gene doesn't work correctly, the highway system falls apart, cell division halts and the cell dies. "But our experiments also revealed something really interesting ...

Story tips from the Department of Energy's Oak Ridge National Laboratory, April 2004

...d at Oak Ridge National Laboratory. Electric drive motors could replace the belts that run compressors, water pumps and oil pumps of hybrid and fuel cell vehicles. The motors, however, require inverters, and ORNL's Gui-Jia Su, John Hsu and Cliff White are developing an integrated inverter that would work wi...

Reverse-direction movement of a molecular motor

...gests that myosins and microtubule-based molecular motors of the kinesin family, which share a common fold consisting of seven beta-strands and six alpha-helices, are intrinsically plus-end directed motors. Conformational changes in the core motor domain are either amplified or amplified and redirected by t...

Space technology in new technique to fight breast cancer

...w the result by MRI. Miniature non-magnetic piezo motors are used to position the equipment before intervention. Cedrat Technologies originally developed these for space applications where no disturbance of the homogeneous magnetic field for imaging can be accepted. In December, ESA's Concurrent Design Fa...

The beginning of the end of flagella

...urrent Biology, the research examined the chemical motors that power events in flagella, antenna-like structures on some cells. Specifically, the research focused on intraflagellar transport (IFT), the process where proteins required for flagellar growth and maintenance move within the flagella. The discove...

Duke researchers discover power behind molecular motors

...e power stroke that drives these motors. Molecular motors are proteins made up of amino acids like any other...mes during cell division. Malfunctioning molecular motors might be responsible for some diseases such as Down's syndrome caused by incorrect distribution of c...

Rutgers to create ultra-tiny 'bio-nano' motors under National Science Foundation grant

...no system." Mavriodis compares developing bio-nano motors to designing the internal combustion engine, which later was combined with other components to develop such history-changing advances as the automobile and airplane. "Two years ago, our ideas seemed very ambitious, like science fiction. Now it's beco...

New chemical process can separate, manipulate carbon nanotubes

... proposed for myriad applications - from miniature motors and chemical sensors to molecule-size electronic circuits - their actual uses have been severely limited by an inability to isolate and manipulate nanotubes having different characteristics. Now, researchers at the University of Illinois at Urbana-Ch...

Fishing for photos of rare or unknown deep-sea creatures with an electronic jellyfish lure

...see animals' natural behaviors because the lights, motors and electric fields such vehicles bring with them are more than enough to either scare animals away before they're ever seen or frighten them into unnatural behavior. To get around such problems, Dr. Widder dreamed of and then, in partnership with th...

UT Southwestern gets new cryo-electron microscope

...ucture of macromolecular complexes like biological motors and ribosomes. I anticipate the structure of many important complexes will be solved, and many collaborations will develop between the cryo-EM specialists and the X-ray crystallographers on campus."...

Counting the molecules that pull cells apart

...otubule aster to position it. But if there is more motors on one side, or stronger motors on one side we could not distinguish. At this point, Joe Howard came into play: He just looked at th...

Counting the molecules that pull cells apart

... position it. We thought that there might be more motors on one side, or stronger motors, which would creat...matical analysis. They learned that there are more motors pulling on the posterior centrosome: about 25, compared to roughly 15 on the other side. Even thoug...

DNA unwinding protein runs on two motors

...complex in the same overall direction. "Having two motors allows it to go a long distance before dropping off, as one can hand off to the other if it is temporarily derailed," for example by a gap or a roadblock in one strand, Kowalczykowski said....

Myosin V, the molecular motor, moves in monkey-bar motion

...tion, and may offer a natural example of molecular motors for the purposes of nanotechnology. There are...ads attached to a long tail, which can bind to the motors molecular cargo. Myosin travels over long filaments of a protein called actin. This cytoskeletal net...

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