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Showing posts with label biomolecular machinery. Show all posts
Showing posts with label biomolecular machinery. Show all posts

2010-05-12

Chemists create novel DNA assembly line

From Physorg.com:

Chemists at New York University and China's Nanjing University have created a DNA assembly line that has the potential to create novel materials efficiently on the nanoscale. Their work is reported in the latest issue of the journal Nature.
Full article


Spiders at the nanoscale: Molecules that behave like robots

From Physorg.com:

A team of scientists from Columbia University, Arizona State University, the University of Michigan, and the California Institute of Technology (Caltech) have programmed an autonomous molecular "robot" made out of DNA to start, move, turn, and stop while following a DNA track.
Full article


2010-01-07

Rules governing RNA's anatomy revealed

From PhysOrg.com:

"With these findings, it now should be possible to predict gross features of RNA 3-D shapes based only on their secondary structure, which is far easier to determine than is 3-D structure," Al-Hashimi said. "This will make it possible to gain insights into the 3-D shapes of RNA structures that are too large or complicated to be visualized by experimental techniques such as X-ray crystallography and NMR spectroscopy. The anatomical rules also provide a blueprint for rationally manipulating the structure and thus the activity of RNA, using small molecules in drug design efforts and also for engineering RNA sensors that change structure in user-prescribed ways."
Full article


2009-10-15

Powerhouses in the cell dismantled

From PhysOrg.com:

Kris Gevaert from VIB/Ghent University (Belgium) and colleagues from the universities of Freiburg and Bochum have achieved a breakthrough in protein research. Using yeast, they have succeeded in making virtually the complete inventory of all the proteins in the mitochondria, the energy producers found in every cell. Their research findings are being published in Cell.
Full article


2009-08-20

New images capture cell's ribosomes at work, could aid in molecular war against disease

From PhysOrg.com:

Researchers at the University of California, Berkeley, have for the first time captured elusive nanoscale movements of ribosomes at work, shedding light on how these cellular factories take in genetic instructions and amino acids to churn out proteins.
Full article


2009-08-10

Nanoelectronic transistor combined with biological machine could lead to better electronics

From PhysOrg.com:

Lawrence Livermore National Laboratory researchers have devised a versatile hybrid platform that uses lipid-coated nanowires to build prototype bionanoelectronic devices.

Mingling biological components in electronic circuits could enhance biosensing and diagnostic tools, advance neural prosthetics such as cochlear implants, and could even increase the efficiency of future computers.
Full article


2009-08-03

DNA computation gets logical

From PhysOrg.com:

Biomolecular computers, made of DNA and other biological molecules, only exist today in a few specialized labs, remote from the regular computer user. Nonetheless, Tom Ran and Shai Kaplan, research students in the lab of Prof. Ehud Shapiro of the Weizmann Institute's Biological Chemistry, and Computer Science and Applied Mathematics Departments have found a way to make these microscopic computing devices 'user friendly,' even while performing complex computations and answering complicated queries.
Full article


2009-04-16

'Motorized' DNA opens door to autonomous molecular experiments

From PhysOrg.com:

Using the same protein molecule that scientists have used for decades to copy genetic material, researchers have developed a molecular motor for propelling DNA.
...
The work demonstrates the ability to precisely control the motion of billions of DNA molecules at once and, through external stimuli, confer autonomous decision-making that sets the stage for massive, but greatly miniaturized experimental systems.
Full article


2009-04-14

Researchers study signaling networks that set up genetic code

From PhysOrg.com:

In a new study, researchers at the University of Illinois have identified and visualized the signaling pathways in protein-RNA complexes that help set the genetic code in all organisms. The genetic code allows information stored in DNA to be translated into proteins.
Full article