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Latest Helices Stories

2012-09-10 14:45:32

An international team of scientists have shown at an unprecedented level of detail how cells prioritize the repair of genes containing potentially dangerous damage. The research, published in the journal Nature and involving academics from the University of Bristol, the Institut Jacques-Monod in France and Rockefeller University in the US, studied the action of individual molecules in order to understand how cellular repair pathways are triggered. The genetic information that forms the...

Secrets Of Genetic Switch Unraveled
2012-08-31 16:46:43

When an invading bacterium or virus starts rummaging through the contents of a cell nucleus, using proteins like tiny hands to rearrange the host´s DNA strands, it can alter the host´s biological course. The invading proteins use specific binding, firmly grabbing onto particular sequences of DNA, to bend, kink and twist the DNA strands. The invaders also use non-specific binding to grasp any part of a DNA strand, but these seemingly random bonds are weak. Emory University...

Cucumber Inspires New Bio-Inspired Twistless Spring
2012-08-31 12:30:36

April Flowers for redOrbit.com - Your Universe Online Researchers at Harvard University have developed a new spring that is soft when pulled gently and stiff when pulled strongly — all from studying a cucumber. Captivated by the strange coiling behavior in the grasping tendrils of the cucumber plant, the research team found that unlike a normal coil, which would unwind to a flat ribbon under stress when untwisted, a cucumber tendril would actually coil further. Understanding this...

2012-08-20 15:38:10

In a discovery that defies the popular meaning of the word "wire," scientists have found that Mother Nature uses DNA as a wire to detect the constantly occurring genetic damage and mistakes that “• if left unrepaired “• can result in diseases like cancer and underpin the physical and mental decline of aging. That topic “• DNA wires and their potential use in identifying people at risk for certain diseases “• is the focus of a plenary talk here...

2012-08-13 21:46:49

In a new study, UT Dallas researchers outline how they used fluorescent molecules to “tag” DNA and monitor a process called DNA looping, a natural biological mechanism involved in rearranging genetic material in some types of cells. The UT Dallas “tag and track” method not only sheds light on how DNA loops form, but also might be adapted to screen drugs for effectiveness against certain viruses that shuffle genetic material, such as  HIV. Until now,...

DNA Code Shapes Gold Nanoparticles
2012-08-08 16:01:32

DNA holds the genetic code for all sorts of biological molecules and traits. But University of Illinois researchers have found that DNA´s code can similarly shape metallic structures. The team found that DNA segments can direct the shape of gold nanoparticles — tiny gold crystals that have many applications in medicine, electronics and catalysis. Led by Yi Lu, the Schenck Professor of Chemistry at the U. of I., the team published its surprising findings in the journal Angewandte...


Latest Helices Reference Libraries

Brief Introduction To DNA Probes
2014-01-12 00:00:00

DNA probes help scientists to detect a specific gene in a long DNA sequence. According to Dr. Michael A. Pfaller, DNA probes are “single-stranded pieces of nucleic acid, labeled with a specific tracer (isotope, enzyme, or chromophore), that will hydrogen bond (hybridize) with complementary single-stranded pieces of DNA (or RNA) under the appropriate conditions of pH, temperature, and iconic strength.” The Foundation for Genomics and Population Health website has a helpful video about...

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Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
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