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Latest Helices Stories

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...

A Novel Double-Stranded DNA Structure Identified
2012-08-03 13:06:37

Researchers' findings address a scientific debate that had lasted for 16 years over the existence of a double-stranded DNA structure Double-stranded DNA has often been described as a right-handed helical structure, known as B-DNA. To perform its multiple functions, double-stranded DNA has multiple structures depending on conditions. For example, the melted DNA bubble forms during transcription elongation and the left-handed helical Z-DNA forms hypothetically during transcriptional...

Genetics Could Explain Parrots Ability To Parrot
2012-07-05 04:42:15

redOrbit Staff & Wire Reports - Your Universe Online Scientists say they have put together a more complete string of genetic letters that may control how well parrots learn to imitate their owners and other noises. Researchers unraveled the certain regions of the parrots' genome using a new technology, single molecule sequencing, and fixing its flaws with data from older DNA-decoding devices. Researchers also decoded hard-to-sequence genetic material from corn and bacteria as proof...


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
cock-a-hoop
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'
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